First Appearances M
  1. Mari Macabe/Vixen. The character first appears in the comic book Action Comics #521 (1981).
  2. Morgana Macawber. The character first appears in the Darkwing Duck animated series episode "Fungus Amongus" (1991).
  3. Macbeth. While the character is based on a real person, the primary influences for the version in this timeline are the version from the play The Tragedy of Macbeth by William Shakespeare (1606) and the version from the Gargoyles animated series, first appearing in the episode "Enter Macbeth" (1995).
  4. Jeffrey "Jeff" Mace/Patriot/Captain America. The character first appears in the comic book Human Torch Comics #4 (1941).
  5. Jason Macendale Jr./Jack O'Lantern/Hobgoblin. The character first appears in the comic book Machine Man #19 (1981). He first appears as Hobgoblin in The Amazing Spider-Man #289 (1987).
  6. Cole MacGrath. The character first appears in the video game inFamous (2009).
  7. Angus MacGyver. The character first appears in the pilot episode of the television series MacGyver (1985). His given name is established in the episode "Good Knight MacGyver" (1991).
  8. Ken Mack/Mettle. The character first appears in the comic book Avengers Academy #1 (2010).
  9. April MacLean. The character first appears in the Class debut episode "For Tonight We Might Die" (2016).
  10. Connor MacLeod. The character first appears in the film Highlander (1986).
  11. Duncan MacLeod. The character first appears in the Highlander television series pilot episode "The Gathering" (1992).
  12. Beatrix "Trix" Macmillan. The character first appears in the Doctor Who novel Time Zero (2002).
  13. Leon MacNeal. The character first appears in the The Puzzle Place television series debut episode "Tippy Woo" (1995).
  14. Regan MacNeil. The character first appears in the novel The Exorcist (1971).
  15. Mary MacPherran/Titania. The character first appears in the comic book Marvel Super Heroes Secret Wars #3 (1984).
  16. Moira Kinross MacTaggert. The character first appears in the comic book X-Men #96 (1975). Her maiden name is established in Marvel Graphic Novel #4 (1982).
  17. Mad Harriet. The character first appears in the comic book Mister Miracle #6 (1972).
  18. Arthur "Artie" Maddicks. The character first appears in the comic book X-Factor #2 (1986).
  19. Marla Madison. The character first appears in the comic book The Amazing Spider-Man #162 (1976).
  20. Oscar Madison. The character first appears in the stage play The Odd Couple (1965).
  21. James "Jamie" Madrox/Multiple Man. The character first appears in the comic book Giant-Size Fantastic Four #4 (1975).
  22. Mae of Zofia. The character first appears in the video game Fire Emblem: Gaiden (1992).
  23. Magic Carpet. The character first appears in the animated feature film Aladdin (1992).
  24. Giovanni "Jack" Magniconte/Mr. Magnificent/All-American. The character first appears in the comic book Kickers, Inc. #1 (1986). He adopts the identity All-American in D.P.7 #21 (1988).
  25. Moses Magnum. The character first appears in the comic book Giant-Size Spider-Man #4 (1975).
  26. Thomas Magnum. The character first appears in the Magnum P.I. television series pilot episode "Don't Eat the Snow in Hawaii" (1980).
  27. Magnus/War Chief. The character first appears in the Doctor Who television series episode "The War Games, Episode Three" (1969).
  28. Magnus (mercenary). The character first appears in the video game Kid Icarus: Uprising (2012).
  29. William "Will" Magnus/Veridium. The character first appears in the comic book Showcase #37 (1962). He first appears as Veridium in ???
  30. Quincy Magoo. The character first appears in the animated short film The Ragtime Bear (1949).
  31. Dyrk Magz/Magno. The character first appears in the comic book Legionnaires #43 (1996).
  32. Carey Mahoney. The character first appears in the film Police Academy (1984).
  33. Majestros/Mr. Majestic. The character first appears in the comic book WildC.A.T.s #11 (1994).
  34. Ian Malcolm. The character first appears in the novel Jurassic Park (1990).
  35. Dorium Maldovar. The character first appears in the Doctor Who television series episode "A Good Man Goes to War" (2011).
  36. Maleficent. The character first appears in the story "The Beauty Sleeping in the Woods" (1697). Her name is established in the animated feature film Sleeping Beauty (1959).
  37. Draco Malfoy. The character first appears in the novel Harry Potter and the Philosopher's Stone (1997).
  38. Scorpius Malfoy. The character first appears in the novel Harry Potter and the Deathly Hallows (2007).
  39. Drake Mallard/Darkwing Duck. The character first appears in the Darkwing Duck animated series premiere episode "Darkly Dawns the Duck" (1991).
  40. Drake Mallard/Negaduck. The character first appears in the Darkwing Duck animated series episode "Just Us Justice Ducks (Part 1)" (1991).
  41. Gosalyn Waddlemeyer Mallard. The character first appears in the Darkwing Duck animated series premiere episode "Darkly Dawns the Duck" (1991).
  42. Grev Mallor/Shroud. The character first appears in the comic book Adventure Comics #344 (1966). The code-name here is apocryphal.
  43. Lydea Mallor. The character first appears in the comic book Legion of Super-Heroes #290 (1982).
  44. Lyrissa Mallor. The character first appears in the comic book Invasion! #2 (1989).
  45. Tasmia Mallor/Umbra. The character first appears in the comic book Adventure Comics #365 (1968). Her real name is established in Adventure Comics #369 (1968). The version in this timeline first appears in Legionnaires #41 (1996). She adopts the Umbra code-name in Legionnaires #43 (1996).
  46. Mallora (Xindi). The character first appears in the Star Trek: Enterprise television series episode "The Xindi" (2003). His name is established in the novelization The Expanse (2003).
  47. Pete Malloy. The character first appears in the Adam-12 television series premiere episode "Log 1: The Impossible Mission" (1968).
  48. Katherine Malocchio/Hotwire/Metal Fella. The character first appears in the premiere episode of the The Awesomes animated series (2013). Her surname is implied in the episode "It's a Mad Mad Mad Parallel World" (2013). Her given name is established in ???. She first adopts the Metal Fella identity in the episode "Hotwire's Funeral" (2014).
  49. Samuel "Sam" Malone. The character first appears in the Cheers television series pilot episode "Give Me a Ring Sometime" (1982).
  50. Ralph Malph. The character first appears in the Happy Days television series first episode "All the Way" (1974).
  51. Manaphy. The character first appears in the video games Pokémon Diamond and Pearl Versions (2006).
  52. Victor Mancha. The character first appears in the comic book Runaways #1 (2005).
  53. Leon Mandrake the Magician. The character first appears in the initial Mandrake the Magician comic strip (1934). The given name Leon, while arbitrary, is taken from a real-life stage magician who used the character as part of his schtick.
  54. Miles Manheim/Mayhem. The character first appears in a narrative medium, as Miles Mayhem, in the M.A.S.K. animated series premiere episode "The Deathstone" (1985). His real surname is established in the comic book Revolution #00 (2016).
  55. Manic the Hedgehog. The character first appears in the Sonic Underground animated series debut episode "Wedding Bell Blues" (1999).
  56. Manitou Raven. The character's loose inspiration, the character Apache Chief, first appears in the Super Friends animated series segment "The Antidote" (1977). The Manitou Raven incarnation first appears in the comic book JLA #66 (2002).
  57. Mano. The character first appears in the comic Adventure Comics #352 (1967). The incarnation primarily used in this timeline first appears in Legionnaires #19 (1994).
  58. Samantha "Sam" Manson. The character first appears in the Danny Phantom animated series premiere episode "Mystery Meat" (2004).
  59. Sofia Mantega/Wind Dancer. The character first appears in the comic book New Mutants #1 (2003).
  60. Reginald "Reggie" Mantle. The character first appears in the comic book Jackpot Comics #5 (1942).
  61. March Hare. The character first appears in the novel Alice's Adventures in Wonderland (1865).
  62. Marcus of Lycia. The character first appears in the video game Fire Emblem: The Binding Blade (2002).
  63. Carol Marcus. The character first appears in the film Star Trek II: The Wrath of Khan (1982).
  64. David Marcus. The character first appears in the film Star Trek II: The Wrath of Khan (1982).
  65. Mark Mardon/Weather Wizard. The character first appears in the comic book The Flash #110 (1960).
  66. Fabian Marechal-Julbin/Bevatron. The character first appears in the comic book New Warriors #9 (1991). His real name is revealed ???
  67. Mareeta of Thracia. The character first appears in the video game Fire Emblem: Thracia 776 (2000).
  68. Maria of Macedon. The character first appears in the video game Fire Emblem: Shadow Dragon and the Blade of Light (1990).
  69. Maribelle of Ylisse. The character first appears in the video game Fire Emblem: Awakening (2012).
  70. Marin/Malon. The character first appears, as Marin, in the video game The Legend of Zelda: Link's Awakening (1993). The Malon rancher incarnation first appears in The Legend of Zelda: Ocarina of Time (1998).
  71. Luigi Mario. The character first appears in the video game Mario Bros. (1983). Though implied in his first appearance, his surname is not established until the live-action film Super Mario Bros. (1993).
  72. Mario Mario. The character first appears in the video game Donkey Kong (1981). His given name is established and surname implied in the game Mario Bros. (1983), and his surname confirmed in the live-action film Super Mario Bros. (1993).
  73. Mark (tactician). The character first appears in the video game Fire Emblem: The Blazing Blade (2003).
  74. Mark Moonrider. The character first appears in the comic book Forever People #1 (1971).
  75. Grant Markham. The character first appears in the Doctor Who: The Missing Adventures novel Time of Your Life (1995).
  76. Cain Marko/Juggernaut. The character first appears in the comic book X-Men #12 (1965).
  77. Michael "Man Mountain" Marko. The character first appears in the comic book The Amazing Spider-Man #73 (1969).
  78. Brion Markov/Geo-Force. The character first appears in the comic book The Brave and the Bold #200 (1983).
  79. Tara Markov/Terra. The character first appears in the comic book New Teen Titans #26 (1982).
  80. Jacob Marley. The character first appears in the novella A Christmas Carol (1843).
  81. Marlin (clownfish). The character first appears in the animated film Finding Nemo (2003).
  82. Marmaduke (dog). The character first appears in the Marmaduke daily comic strip (1954).
  83. Jenna Maroney. The character first appears in the 30 Rock television series pilot episode (2006).
  84. Diego Marquez. The character first appears in the Dora the Explorer episode "Meet Diego" (2003).
  85. Dora Marquez/The Explorer. The character first appears in the Dora the Explorer animated series premiere episode "The Big Red Chicken" (2000).
  86. Lorena Marquez/Aquagirl. The character first appears in the comic book Aquaman #16 (2004).
  87. Marco Marquez. The character first appears in the Sealab 2021 animated series preview episode "Radio Free Sealab" (2000). His surname is established ???
  88. Veronica Mars. The character first appears in the Veronica Mars television series pilot episode (2004).
  89. Beverly "Bev" Marsh Rogan. The character first appears in the novel IT (1986).
  90. Stanley "Stan" Marsh. The character first appears, unnamed, in the animated short film The Spirit of Christmas (1992). He is identified as Stan in a short of the same name in 1995. His full name is established in ???
  91. Marshadow. The character first appears in the video games Pokémon Sun and Moon Versions (2016).
  92. Holly Marshall. The character first appears in the Land of the Lost television series pilot episode "Cha-Ka" (1974).
  93. William "Will" Marshall. The character first appears in the Land of the Lost television series pilot episode "Cha-Ka" (1974).
  94. Miiyabin "Mii" Marten/Equinox. The character first appears in the comic book Justice League United #0 (2014).
  95. Marth. The character first appears in the video game Fire Emblem: Shadow Dragon and the Blade of Light (1990).
  96. Jonathan Martian. The character first appears, unnamed, in Episode 407 of the television series Sesame Street (1972). Her alias of Jonathan is established in Episode 2494 (1988).
  97. Stevie Martian. The character first appears, unnamed, in Episode 407 of the television series Sesame Street (1972). Her alias of Stevie is established in Episode 2494 (1988).
  98. Cody Martin. The character first appears in the The Suite Life of Zack & Cody television series pilot episode "Hotel Hangout" (2005).
  99. Donna Martin. The character first appears in the Beverly Hills 90210 television pilot episode "Class of Beverly Hills" (1990).
  100. Zachary "Zack" Martin. The character first appears in the The Suite Life of Zack & Cody television series pilot episode "Hotel Hangout" (2005).
  101. Martinex T'Naga. The character first appears in the comic book Marvel Super-Heroes #18 (1969).
  102. Martok. The character first appears in the Star Trek: Deep Space Nine television series episode "In Purgatory's Shadow" (1997).
  103. Mar-Vell/Captain Marvel. The character first appears in the comic book Marvel Super-Heroes #12 (1967).
  104. Lawrence "Larry" Marvick. The character first appears in the Star Trek television series episode "Is There in Truth No Beauty?" (1968).
  105. Marvin the Martian. The character first appears in the Looney Tunes animated short film Haredevil Hare (1948). His name is established ???
  106. Grant Marx. The character first appears in the video games Pokémon X and Y Versions (2013). His surname is arbitrary.
  107. Mary (mother of Jesus). The character first appears in the Book of Mark, in the Bible, written in the 1st century CE.
  108. Hollis Mason/Nite-Owl. The character first appears in the comic book Watchmen #1 (1985).
  109. Louise "Weezi" Grant Mason. The character first appears in the comic book All Select Comics #11 (1946). Her married name is established in the comic book Sensational She-Hulk #???
  110. Perry Mason. The character first appears in the Perry Mason novel The Case of the Velvet Claws (1933).
  111. Rex Mason/Metamorpho. The character first appears in the comic book The Brave and the Bold #57 (1965).
  112. Masque (Morlock). The character first appears in the comic book Uncanny X-Men #169 (1983).
  113. Dylan Massett. The character first appears in the Bates Motel television series episode "Nice Town You Picked, Norma…" (2013).
  114. Alicia Reiss Masters. The character first appears in the comic book Fantastic Four #8 (1962).
  115. Henry "Harry" Masters Jr. The character first appears, with the Japanese name of Toya, in the video games Pokémon Black and White Versions (2010). His English name is arbitrary.
  116. Ken Masters. The character first appears in the arcade video game Street Fighter (1987).
  117. Phillip Masters/Puppet Master. The character first appears in the comic book Fantastic Four #8 (1962).
  118. Keith "Two-Bit" Mathews. The character first appears in the novel The Outsiders (1967).
  119. Ma-Ti. The character first appears in the Captain Planet and the Planeteers animated series premiere episode "A Hero for Earth" (1990).
  120. Emma Matiere Louquer. The character first appears in the video games Pokémon X and Y Versions (2013). Her surnames are arbitrary.
  121. Benjamin "Ben" Matlock. The character first appears in the Matlock television series pilot episode "Diary of a Perfect Murder" (1986).
  122. Takeshi "Taki" Matsuya/Wiz Kid. The character first appears in the comic book X-Terminators (1988).
  123. Matthew of Lycia. The character first appears in the video game Fire Emblem: The Blazing Blade (2003).
  124. Brett Matthews/Turbo Teen. The character first appears in the Turbo Teen animated series first episode "Turbo Thieves" (1984).
  125. Cornelius "Cory" Matthews. The character first appears in the Boy Meets World television series pilot episode (1993).
  126. Eric Matthews. The character first appears in the Boy Meets World television series pilot episode (1993).
  127. Max (lagomorph). The character first appears in the comic book Sam & Max: Freelance Police #1 (1987)
  128. Max Headroom. The character first appears in the music video television production host segments of The Max Headroom Show (1985).
  129. Max Mercury/Ahwehota/Quicksilver. The character first appears, as Quicksilver, in the comic book National Comics #5 (1940). He first appears as Max Mercury in Flash #76 (1993).
  130. Maxima. The character first appears in the comic book Action Comics #645 (1989).
  131. Luna Maximoff. The character first appears in the comic book Fantastic Four #240 (1982).
  132. Pietro Maximoff/Quicksilver. The character first appears in the comic book X-Men #4 (1964). His surname is established in Avengers #186 (1979).
  133. Wanda Maximoff/Scarlet Witch. The character first appears in the comic book X-Men #4 (1964). Her surname is established in Avengers #186 (1979).
  134. Maximus Decimus Meridius. The character first appears in the film Gladiator (2000).
  135. Michael "Mike" Maxwell/B'Wana Beast. The character first appears in the comic book Showcase #66 (1967).
  136. The Maxx/David "Dave" Olsen. The character first appears in the comic book Darker Image #1 (1993). His full name is arbitrary.
  137. Melinda May. The character first appears in the Marvel's Agents of S.H.I.E.L.D. television series pilot episode (2013).
  138. Patricia "Patti" Mayonnaise. The character first appears in the Doug animated series premiere episode "Doug Bags a Neematoad" (1991).
  139. Travis Mayweather. The character first appears in the Enterprise television series pilot episode "Broken Bow" (2001).
  140. Beth Maza. The character first appears in the Gargoyles animated series episode "The Cage" (1995).
  141. Derek Maza/Talon. The character first appears in the Gargoyles animated series episode "Deadly Force" (1994). He adopts the Talon identity in the episode "Metamorphosis" (1995).
  142. Diane Parks Maza. The character first appears in the Gargoyles animated series episode "Deadly Force" (1994). Her maiden name is arbitrary.
  143. Elisa Maza. The character first appears in the Gargoyles animated series premiere episode "Awakening: Part One" (1994). Her given name is established in "Awakening: Part Three" (1994).
  144. Peter Maza. The character first appears in the Gargoyles animated series episode "Deadly Force" (1994).
  145. M'Baku/Man-Ape. The character first appears in the comic book Avengers #62 (1969).
  146. Jabilo M'Benga. The character first appears in the Star Trek television series episode "A Private Little War" (1968). His given name, Jabilo, is established in the Star Trek: Vanguard novel Harbinger (2005).
  147. Jason Lochinvar "J.L." McCabe/the Fatman. The character first appears, as James L. McShane, on the Matlock television series episode "The Don, Part 1" (1986). He is renamed for the Jake and the Fatman television series debut episode "Happy Days Are Here Again" (1987).
  148. Kevin McCallister. The character first appears in the film Home Alone (1990).
  149. Celeste McCauley/Neon. The character first appears in the comic book Legion of Super-Heroes #6 (1990).
  150. Leland McCauley III. The character first appears in the comic book Superboy #214 (1976). The version in this timeline first appears in Legion of Super-Heroes #63 (1994).
  151. Nemo McCay. The character first appears, as simply Nemo, in the Little Nemo in Slumberland comic strip (1905). His surname is arbitrary.
  152. Mayor McCheese. The character first appears in McDonald's restaurants commercials in 1971.
  153. John McClane. The character first appears, as Joe Leland, in the novel The Detective (1966). He is renamed for that novel's adaptation in the film Die Hard (1988).
  154. Lance McClain. The character first appears, as Isamu Kurogane, in the Beast King GoLion animated series premiere episode "Escape from Slave Castle" (1981). The first incarnation called Lance first appears in the Voltron: Defender of the Universe animated series premiere "Space Explorers Captured" (1984). His surname is first used in the comic book Voltron: Defender of the Universe #0 (2003).
  155. James McCloud. The character first appears in the video game Star Fox 64 (1997).
  156. James "Fox" McCloud Jr. The character first appears in the video game Star Fox (1993).
  157. James John "J.J." McClure. The character first appears in the film The Cannonball Run (1981). His full given and middle names are arbitrary.
  158. Mearth McConnell. The character first appears (is born in) in the Mork & Mindy television series episode "Three the Hard Way" (1981) and is named in "Mama Mork, Papa Mindy" (1981).
  159. Mindy McConnell. The character first appears in the Mork & Mindy television series pilot episode (1978).
  160. Kenneth "Kenny" McCormick. The character first appears, unnamed, in the animated short film The Spirit of Christmas (1992). He is first identified as Kenny in another short of the same name in 1995. His full name is established in ???
  161. Henry "Hank" McCoy/Beast. The character first appears in the comic book X-Men #1 (1963). His formal first name, Henry, is established in X-Men #4 (1964).
  162. Henry McCoy/Dark Beast. The character first appears in the comic book X-Men: Alpha #1 (1995).
  163. Josie McCoy. The character first appears in the comic book Archie's Gals n Pals #22 (1962). Her surname is established as McCoy in the live-action feature film Josie and the Pussycats (2001).
  164. Leonard "Bones" McCoy. The character first appears in the Star Trek television series episode "The Man Trap" (1966).
  165. Heather McCrimmon. The character first appears in the comic strip "The Chromosome Connection", printed in Doctor Who Adventures magazine #96 (2009).
  166. James "Jamie" McCrimmon. The character first appears in the Doctor Who television series episode "The Highlanders, Episode 1" (1967).
  167. Ronald McDonald (clown). The character first appears in television commercials for McDonald's restaurants in 1963.
  168. Ronald "Mac" McDonald. The character first appears in the It's Always Sunny in Philadelphia television series premiere episode "The Gang Gets Racist" (2005). His full name is established in the episode "The High School Reunion, Part 2: The Gang Gets Revenge" (2011).
  169. Siobhan McDougal/Silver Banshee. The character first appears in the comic book Action Comics #595 (1987).
  170. Scrooge McDuck. The character first appears in the comic book Four Color #178 (1947).
  171. Casper McFadden. The character first appears in the children's book The Friendly Ghost (1939). His surname is established in the live-action film Casper (1996).
  172. George "Spanky" McFarland. The character first appears in the Our Gang short film Free Eats (1932). The character's real name is taken from the actor who played him.
  173. Ray McFarland/Long Dong. The character first appears in the comic book Freshmen #1 (2005).
  174. George McFly. The character first appears in the film Back to the Future (1985).
  175. Lorraine Baines McFly. The character first appears in the film Back to the Future (1985).
  176. Martin "Marty" McFly. The character first appears in the film Back to the Future (1985).
  177. Casey McGinnis. The character first appears in the Pokémon anime episode "The Rookie's Chikorita!" (1999), with the name Nanako. She is named Casey for the American adaptation, "The Double Trouble Header" (2000). Her surname is arbitrary.
  178. Matthew "Matt" McGinnis/Batman. The character first appears in the Batman Beyond animated series premiere episode "Rebirth" (1999).
  179. Terrence "Terry" McGinnis/Batman. The character first appears in the Batman Beyond animated series premiere episode "Rebirth" (1999).
  180. Minerva McGonagall. The character first appears in the novel Harry Potter and the Philosopher's Stone (1997).
  181. Harold McGrady V. The character first appears in the Total Drama Island animated series premiere episode "Not-So Happy Campers, Part 1" (2007). His surname is established in ???.
  182. Quick Draw McGraw. The character first appears in the The Quick Draw McGraw animated series premiere segment "Scary Prairie" (1959).
  183. McGruff the Crime Dog. The character first appears in advertising starting in 1980.
  184. Elizabeth "Lizzie" McGuire. The character first appears in the Lizzie McGuire television series debut episode "Rumors" (2001).
  185. Marcus "Mark" McHenry. The character first appears in the Star Trek: The Next Generation novella Starfleet Academy #1: Worf's First Adventure (1993).
  186. "Trapper" John McIntyre. The character first appears in the novel MASH: A Novel about Three Army Doctors (1968).
  187. Ashley McIntosh. The character first appears in the video game WarioWare: Touched! (2004). Her surname is arbitrary.
  188. Colin McKay/Kylun. The character first appears in the comic book Excalibur #2 (1988). He first appears as Kylun in Excalibur #43 (1991).
  189. Dylan McKay. The character first appears in the Beverly Hills 90210 television series episode "The Green Room" (1990).
  190. Kurt "Cowboy" McKitterick. The character first appears, as simply Cowboy, in the film The Warriors (1979). His real name is arbitrary.
  191. Christian "Chris" McLean. The character first appears in the Total Drama Island animated series premiere episode "Not-So Happy Campers, Part 1" (2007).
  192. Shirley "The Loon" McLoon. The character first appears in the Tiny Toon Adventures animated series premiere episode "The Looney Beginning" (1990).
  193. Randle McMurphy. The character first appears in the novel One Flew Over the Cuckoo's Nest (1962).
  194. Holden McNeil. The character first appears in the film Chasing Amy (1997).
  195. Charles McNider/Doctor Mid-Nite. The character first appears in the comic book All-American Comics #25 (1941).
  196. Droopy McPoodle. The character first appears in the animated short film Dumb-Hounded (1943). His surname is established in Northwest Hounded Police (1946).
  197. Launchpad McQuack. The character first appears in the DuckTales animated series premiere film "Treasure of the Golden Suns" (1987).
  198. Tyrus Cassius "T.C." McQueen. The character first appears in the Space: Above and Beyond television series pilot (1995).
  199. Dorothy "Ace" McShane/Dorothée. The character first appears in the Doctor Who television series episode "Dragonfire, Part One" (1987). Her surname is established in the Doctor Who: The New Adventures novel Set Piece (1995). She first uses the name Dorothée in ???
  200. Gillian McShane-Krinn. The character first appears, as simply Gillian, in the comic strip "The Klepton Parasites" printed in TV Comic #674 (1964). Her surname is arbitrary.
  201. John McShane-Krinn. The character first appears, as simply John, in the comic strip "The Klepton Parasites" printed in TV Comic #674 (1964). His full name is arbitrary.
  202. Meatwad. The character first appears in the Aqua Teen Hunger Force animated series premiere episode "Rabbot" (2000).
  203. Media (god). The character first appears in the novel American Gods (2001).
  204. Medli. The character first appears in the video game The Legend of Zelda: The Wind Waker (2002).
  205. Medusa (Gorgon). The character first appears, perhaps, outside oral tradition in Hesiod's Theogeny, written c. 700 BCE.
  206. Mega Man/Rock. The character first appears as Rock/Rock Man in the video game Mega Man (1987). The name Mega Man is established in the English release.
  207. Megara. The character first appears as part of the epic poem of Heracles, written c. 600 BCE, though now lost.
  208. Megatron/Galvatron (Decepticon). The character first appears in the The Transformers animated series episode "More Than Meets the Eye, Part 1" (1984). He adopts the Galvatron identity in The Transformers: The Movie (1986).
  209. Megatron/Optimus Maximus. The character first appears in the Beast Wars: Transformers animated series premiere episode "Beast Wars (Part 1)" (1996). His earlier name is apocryphal.
  210. Setsuna Meioh/Tehrista/Sailor Pluto. The character first appears in the Pretty Soldier Sailor Moon manga chapter "Act 18: Time Warp, Sailor Pluto" (1993).
  211. The Mekon. The character first appears in the magazine Eagle #1 (1950).
  212. M-11/Human Robot. The character first appears in the comic book Menace #11 (1954).
  213. Peeta Mellark. The character first appears in the novel The Hunger Games (2008).
  214. Janine Melnitz. The character first appears in the film Ghostbusters (1984).
  215. Meloetta. The character first appears in the video games Pokémon Black and White Versions (2010).
  216. Josef Mengele. While a real person, a highly fictionalized version important to the timeline first appears in the novel The Boys from Brazil (1976).
  217. Billy Mensch. The character first appears in the Grim Adventures of Billy & Mandy animated short "Meet the Reaper" (2003). His surname is arbitrary.
  218. Mentok the Mind-Taker. The character first appears in the Birdman and the Galaxy Trio animated series Birdman segment "Mentor [sic], the Mind-Taker" (1967).
  219. Patricia Menzies. The character first appears in the Doctor Who audio drama The Condemned (2008).
  220. Meowth (Team Rocket!). The character first appears in the Pokémon anime episode "Showdown! Pokémon Center!" (1997).
  221. Mephisto. The character first appears in the comic book Silver Surfer #3 (1968).
  222. Mera. The character first appears in the comic book Aquaman #11 (1963).
  223. Mercury (Magnus). The character first appears in the comic book Showcase #37 (1962).
  224. Mercutio. The character first appears in the story Giuletta e Romeo (1530).
  225. Peter Merkel Jr./Rag Doll. The character first appears in the comic book Villains United #1 (2005).
  226. Merlinus (merchant). The character first appears in the video game Fire Emblem: The Binding Blade (2002) as Marinus. The English name Merlinus in the game Fire Emblem (2003).
  227. Merlyn/Merlin. The character first appears in his recognizable form in Geoffrey of Monmouth's Historia Regum Brittanae (1136).
  228. Ulysse Mérou. The character first appears in the novel The Planet of the Apes (1963).
  229. Merric. The character first appears in the video game Fire Emblem: Shadow Dragon and the Blade of Light (1990).
  230. Mervyn/Sheriff of Nottingham. The character possibly first appears, in recorded form, in the ballad A Gest of Robyn Hode (c. 1450). The name Mervyn comes from the film Robin Hood: Men in Tights (1993).
  231. Mesprit. The character first appears in the video games Pokémon Diamond and Pearl Versions (2006).
  232. Meta Knight. The character first appears in the video game Kirby's Adventure (1993).
  233. Metalhead (robot turtle). The character first appears in the Teenage Mutant Ninja Turtles animated series episode "The Making of Metalhead" (1989).
  234. Metron. The character first appears in the comic book New Gods #1 (1971).
  235. Staq Mevlen/Fire Lad. The character first appears in the comic book Adventure Comics #306 (1963). The version appearing in this timeline first appears in Legionnaires #43 (1996).
  236. Mew. The character first appears in the video games Pokémon Red and Green Versions (1996).
  237. Jason "Jay" Mewes. The character first appears in the film Clerks (1994). His full name is arbitrary.
  238. Mewtwo. The character first appears in the video games Pokémon Red and Green Versions (1996).
  239. Mia of Weyard. The character first appears, as Jasmine, in the video game Golden Sun (2001). Her name Mia is established in the English release (2001).
  240. Mia (Greil Mercenary). The character first appears, as Wayu, in the video game Fire Emblem: Path of Radiance (2005). Her English name is established in the North American release.
  241. Anthony "Tony" Micelli. The character first appears in the Who's the Boss? television series pilot episode (1984).
  242. Samantha "Sam" Micelli. The character first appears in the Who's the Boss? television series pilot episode (1984).
  243. Michalis of Macedon. The character first appears in the video game Fire Emblem: Shadow Dragon and the Blade of Light (1990).
  244. Michelangelo (turtle). The character first appears, erroneously as Michaelangelo, in the comic book Teenage Mutant Ninja Turtles #1 (1984).
  245. Joseph "Vermin" Michos. The character first appears, as only Vermin, in the film The Warriors (1979). His real name is arbitrary.
  246. Midas. A figure of possible historicity, his first non-oral appearance is perhaps in Herodatus's Histories (c. 450 BCE).
  247. Midir of Grannvale. The character first appears in the video game Fire Emblem: Genealogy of the Holy War (1996).
  248. Midna. The character first appears in the video game The Legend of Zelda: Twilight Princess (2006).
  249. Mido. The character first appears in the video game The Legend of Zelda: Ocarina of Time (1998).
  250. Midori (daughter of Kaze). The character first appears, as Midoriko, in the video game Fire Emblem: If (2015). She is renamed Midori in the English language release Fire Emblem: Fates (2016).
  251. Izuku Midoriya/Deku. The character first appears in the My Hero Academia manga Chapter 1: "Izuku Midoriya: Origin", first published in Weekly Shonen Jump magazine (2014).
  252. Daisuke "Pops" Mifune. The character first appears in the first chapter of Mach GoGoGo manga published in Shonen Book magazine (1966). His nickname, Pops, is established in the Speed Racer anime adaptation's premiere episode "The Great Plan, Episode 1" (1967).
  253. Go Mifune/Speed Racer. The character first appears in the first chapter of Mach GoGoGo manga published in Shonen Book magazine (1966). His nickname, Speed Racer, is established in the Speed Racer anime adaptation's premiere episode "The Great Plan, Episode 1" (1967).
  254. Ken'ichi "Rex" Mifune/Racer X/Masked Racer. The character first appears in the second chapter of Mach GoGoGo manga published in Shonen Book magazine (1966). His nickname, Rex, is established in the Speed Racer anime adaptation episode "Challenge of the Masked Racer, Part 1" (1967).
  255. Kurio "Spritle" Mifune. The character first appears in the first chapter of Mach GoGoGo manga published in Shonen Book magazine (1966). His nickname, Spritle, is established in the Speed Racer anime adaptation's premiere episode "The Great Plan, Episode 1" (1967).
  256. Mighty the Armadillo. The character first appears in the arcade video game SegaSonic the Hedgehog (1993).
  257. Mila (false companion). The character first appears in the Doctor Who audio drama Patient Zero (2009).
  258. Brittany Miller. The character first appears in the Alvin and the Chipmunks animated series segment "The Chipettes" (1983).
  259. Carol "Mom" Miller. The character first appears in the Futurama animated series episode "A Fishful of Dollars" (1999). Her given name is established in ??? Her surname is established on Reddit by creators.
  260. Eleanor Miller. The character first appears in the Alvin and the Chipmunks animated series segment "The Chipettes" (1983).
  261. Jeanette Miller. The character first appears in the Alvin and the Chipmunks animated series segment "The Chipettes" (1983).
  262. Layla Miller/Butterfly. The character first appears in the comic book House of M #4 (2005).
  263. Lucie Miller. The character first appears in the Doctor Who: The Eighth Doctor Adventures audio drama Blood of the Daleks, Part 1 (2007).
  264. Henry Mills. The character first appears in the Once Upon a Time television series pilot episode (2011).
  265. Christopher Robin Milne. The character first appears in the children's book Winnie-the-Pooh (1926), His surname is arbitrary, taken from his character basis, a real person.
  266. Pokey "Porky" Minch. The character first appears in the video game Mother 2: [Giygas] Strikes Back (1994).
  267. Mr. Mind. The character first appears in the comic book Captain Marvel Adventures #26 (1943).
  268. Minerva of Macedon. The character first appears in the video game Fire Emblem: Shadow Dragon and the Blade of Light (1990).
  269. Barbara Minerva/The Cheetah. The character first appears in the comic book Wonder Woman #7 (1987). She adopts the Cheetah persona in Wonder Woman #9 (1987).
  270. Ming the Merciless. The character first appears in an early Flash Gordon comic strip (1934).
  271. Minnlee/Terra. The character first appears in the comic book New Titans Annual #7 (1991). Her real name is arbitrary.
  272. Nico Minoru/Sister Grimm. The character first appears in the comic book Runaways #1 (2003).
  273. Robert Minoru. The character first appears in the comic book Runaways #1 (2003).
  274. Tina Ikeda Minoru. The character first appears in the comic book Runaways #1 (2003). Her maiden name is arbitrary.
  275. Mipha. The character first appears in the video game The Legend of Zelda: Breath of the Wild (217).
  276. Miriam (sister of Moses). The character first appears in the Book of Exodus in the Torah, written in antiquity.
  277. Miriel of Ylisse. The character first appears in the video game Fire Emblem: Awakening (2012).
  278. Heihachi Mishima. The character first appears in the video game Tekken (1994).
  279. Tara Mishra. The character first appears in the comic book Doctor Who: The Ninth Doctor #6 (2016).
  280. Adam Mitchell. The character first appears in the Doctor Who television series episode "Dalek" (2005).
  281. Dennis "the Menace" Mitchell. The character first appears in the Dennis the Menace daily comic strip (1951).
  282. Gary Mitchell. The character first appears in the Star Trek television series second pilot episode "Where No Man Has Gone Before" (1966).
  283. Mitth'raw'nuruodo/Thrawn. The character first appears in the Star Wars novel Heir to the Empire (1991).
  284. Nariyoshi Miyagi. The character first appears in the film The Karate Kid (1987). His given name is established in the online series Cobra Kai (2018).
  285. Sakura Miyamoto. The character first appears in the video games Pokémon Gold and Silver Versions (1999). Her surname is arbitrary.
  286. Miyamoto Usagi. The character first appears in the comic book anthology Albedo Anthromorphics #2 (1984).
  287. Ami Mizuno/Sailor Mercury. The character first appears, with her Japanese name of Ami Mizuno, in the Pretty Soldier Sailor Moon manga chapter "Act 2: Ami, Sailor Mercury" (1992).
  288. Dominic Mndawe/Freedom Beast. The character first appears in the comic book Animal Man #13 (1989).
  289. Moby Dick (whale). The character first appears in the novel Moby-Dick; or The Whale (1865).
  290. Mock Turtle. The character first appears in the novel Alice's Adventures in Wonderland (1865).
  291. Kristin Danielle Marina "Kris"/"Dani" Mojica. The character first appears, as Kris, in the video game Pokémon Crystal Version (2000). She is established to be named Marina in the Pokémon anime special The Legend of Thunder (2001). Her nickname of Dani is established in the English adaptation of the anime's episode "Tie One On!" (2003). Her full name is arbitrary.
  292. Mojo. The character first appears in the comic book Longshot #3 (1985).
  293. Mojo Jojo. The character first appears in the The Powerpuff Girls animated series episode "Monkey See, Doggie Do" (1998).
  294. Morocco Mole. The character first appears in the animated broadcast television special The World of Atom Ant and Secret Squirrel (1965).
  295. Jeremiah Moliarty. The character first appears in the Darkwing Duck animated series episode "That Sinking Feeling" (1991). His given name is arbitrary.
  296. Lisa Molinari/Coat of Arms. The character first appears in the comic book Dark Reign: Young Avengers #1 (2009).
  297. Moltres. The character first appears in the video games Pokémon Red and Green Versions (1996).
  298. Momotarō. The character first appears in a story dating back to the Edo period (approx. 1600-1800). This writer has not been able to find his first "official" appearance.
  299. Antonia "Toni" Monetti/Argent. The character first appears in the comic book Teen Titans #1 (1996).
  300. Mongul. The character first appears in the comic book DC Comics Presents #27 (1980).
  301. Adrian Monk. The character first appears in the Monk television series pilot episode "Mr. Monk and the Candidate" (2002).
  302. Monkey D. Luffy. The character first appears in the One Piece manga debut chapter: "Romance Dawn" (1997).
  303. Harry Monmouth/Dingo. The character first appears in the Gargoyles animated series episode "The Thrill of the Hunt" (1994). His real name is established in ???
  304. Amos Monroe/Crackpot. The character first appears in the comic book Invasion! #1 (1988). His name and code-name are established in The Blasters Special #1 (1989).
  305. Gardner Monroe/Flashback. The character first appears in the comic book Alpha Flight #11 (1994).
  306. Jack Monroe/Nomad/Bucky. The character first appears, as Bucky, in the comic book Young Men #24 (1954). His real name is established in Captain America #281 (1983). He adopts the identity of Nomad in Captain America #282 (1983).
  307. Guy Montag. The character first appears in the short story "The Fireman", originally published in Galaxy magazine (1951).
  308. Benvolio Montague. The character first appears in the story Giuletta e Romeo in the work Novelle (1554).
  309. Romeo Montague. The character first appears, as Mariotto, in the story "Mariotto and Gianozza" in the 33rd novel in the Il Novellino series (1476). He first appears as Romeo in Giuletta e Romeo (1530).
  310. Doña Maria, Marquesa de Montemayor. The character first appears in the novel The Bridge of San Luis Rey (1927).
  311. Monterey Jack. The character first appears in the Chip n Dale Rescue Rangers animated series preview episode "Catteries Not Included" (1988).
  312. Gabriella Montez. The character first appears in the broadcast film High School Musical (2006).
  313. Yolanda Montez/Wildcat. The character first appears in the comic book Infinity, Inc. #12 (1985). She first appears as Wildcat in Crisis on Infinite Earths #6 (1985).
  314. Renee Montoya/The Question. The character, though created for the Batman: The Animated Series animated series, actually debuts in the comic book Batman #475 (1992). She debuts as The Question in 52 #48 (2007).
  315. Mooch (cat). The character first appears in a Mutts daily comic strip (1994).
  316. Dominic "Butch" Moody. The character first appears in the comic book Spyboy #1 (1999).
  317. Cindy Moon/Silk. The character first appears in the comic book The Amazing Spider-Man #1 (2014).
  318. Daphne Moon Crane. The character first appears in the Frasier television series premiere episode "The Good Son" (1993). She adopts the surname Crane upon marrying in ???
  319. Laura McCabe Moon. The character first appears in the novel American Gods (2001).
  320. Shadow Moon. The character first appears in the novel American Gods (2001).
  321. Moonchild/The Childlike Empress. The character first appears in the novel The Neverending Story (1979).
  322. June Moone/Enchantress. The character first appears in the comic book Strange Adventures #187 (1966).
  323. Maria "Fish" Mooney. The character first appears in the pilot episode of the Gotham television series (2014). Her given name is established in "Welcome Back, Jim Gordon" (2015).
  324. Danielle "Dani" Moonstar/Psyche/Mirage. The character first appears in the comic book Marvel Graphic Novel #4 (1982). She first uses the Mirage identity in New Mutants #21 (1984).
  325. Flannery Moore. The character first appears, with her original Japanese name Asuna, in the video games Pokémon Ruby and Sapphire Versions (2002). Her English dub name is established in the English release (2003). Her surname, assumed from her grandfather, comes from the Pokémon animated series English adaptation episode "Poetry Commotion" (2004).
  326. Bullwinkle Moose. The character first appears in the Rocky & His Friends animated series premiere episode "Jet Fuel Formula" (1959).
  327. Montgomery Moose. The character first appears in Get-Along Gang greeting cards beginning in 1983.
  328. "Little" Lulu Moppet. The character first appears in a cartoon in The Saturday Evening Post (1935).
  329. Miles Morales/Spider-Man. The character first appears in the comic book Ultimate Comics: Fallout #4 (2011).
  330. Sebastian Moran. The character first appears in the short story "The Adventure of the Empty House" (1903).
  331. Michael Morbius. The character first appears in the comic book The Amazing Spider-Man #101 (1971).
  332. Baron Karl Mordo. The character first appears in the comic book Strange Tales #111 (1963).
  333. Mordred. The character is first mentioned, apparently, in the Annales Cambriae (c. 1150).
  334. Mordru/Wrynn. The character first appears in the comic book Adventure Comics #369 (1968).
  335. Lorna Morello Mucchio. The character first appears in the Orange Is the New Black online television series premiere episode "I Wasn't Ready" (2013). She changes her surname to Mucchio upon marrying in "Trust No Bitch" (2015).
  336. Morgaine le Fey/Morgan/Morgana/Morgen/Morganna/le Fay. The character first appears, apparently, outside folklore, in the Geoffrey Monmouth work Vita Merlini (c. 1150).
  337. Morgan (child of Robin). The character first appears, as Marc, in the video game Fire Emblem: Awakening (2012). They are given the English name Morgan in the North American release (2013).
  338. Ellen Morgan. The character first appears in the pilot episode of the television series These Friends of Mine (1994).
  339. Sally Morgan. The character first appears in the Doctor Who audio drama House of Blue Fire (2011).
  340. Daria Morgendorffer. The character first appears in the Beavis and Butt-head animated series episode "Sign Here" (1993). Her surname is established in the episode "Scientific Stuff" (1993).
  341. Helen Barksdale Morgendorffer. The character first appears in the Daria animated series premiere episode "Esteemsters" (1997).
  342. Jake Morgendorffer. The character first appears in the Daria animated series premiere episode "Esteemsters" (1997).
  343. Quinn Morgendorffer. The character first appears in the Daria animated series premiere episode "Esteemsters" (1997).
  344. Rhoda Morgenstern. The character first appears in the The Mary Tyler Moore Show television series pilot episode "Love Is All Around" (1970).
  345. Deborah Morgna/Sun Girl. The character first appears in the comic book Teen Titans #43 (2007).
  346. Dirk Morgna/Sun Boy. The character first appears in the comic book Action Comics #276 (1961). His real name is revealed in Adventure Comics #302 (1962). The version appearing in this timeline first appears in Legionnaires #29 (1995).
  347. James Moriarty. The character first appears in the Sherlock Holmes short story "The Final Problem", published in Strand Magazine (1893).
  348. James Moriarty (hologram). The character first appears in the Star Trek: The Next Generation television series episode "Elementary, Dear Data" (1988).
  349. Mork/Mork McConnell. The character first appears on the Happy Days television series episode "My Favorite Orkan" (1978). He adopts the surname McConnell in the Mork & Mindy television series episode "The Wedding" (1981).
  350. Morla the Ancient One. The character first appears in the novel The Neverending Story (1979).
  351. Morn. The character first appears in the Star Trek: Deep Space Nine television series pilot episode "Emissary" (1993). His name is established in the episode "Vortex" (1993).
  352. Glorith "Lori" Morning. The character first appears, as simply Glorith, in the comic book Adventure Comics #338 (1965). She first identified as "Lori" in Valor #12 (1993). Her surname is established in Legion of Super-Heroes #75 (1995).
  353. Moroni. The character first appears in the religious text The Book of Mormon (1830).
  354. Mikhail "Misha" Morozov/The Heavy Weapons Guy. The character first appears in the video game Team Fortress 2 (). His surname is arbitrary.
  355. Morpheus (god). The character apparently first appears, outside oral tradition, in Ovid's Metamorphoses (c. 1 CE).
  356. Morpheus (Matrix). The character first appears in the film The Matrix (1999).
  357. Zack Morris. The character first appears in the Good Morning, Miss Bliss television series premiere episode "Summer Love" (1988).
  358. Jack Mort. The character first appears in the novel The Dark Tower II: The Drawing of the Three (1987).
  359. Mortimus/The Monk. The character first appears in the Doctor Who television series episode "The Watcher" (1965). He first appears in his fourth incarnation in the The Eighth Doctor Adventures audio drama The Book of Kells (2010). His short-form birth name is established in the Doctor Who: The New Adventures novel No Future (1994).
  360. M'Gann M'Orzz/Miss Martian. The character first appears in the comic book Teen Titans #37 (2006).
  361. Moses. The character first appears in the Book of Exodus in the Torah, written in antiquity.
  362. Maurice Moss. The character first appears in the The IT Crowd television series pilot episode "Yesterday's Jam" (2006).
  363. Mother Brain. The character first appears in the video game Metroid (1986).
  364. Mon Mothma. The character first appears in the film Return of the Jedi (1983).
  365. Mothra. The character first appears in the film Mothra (1961).
  366. Wilfred "Wilf" Mott. The character first appears in the Doctor Who episode "Voyage of the Damned" (2007).
  367. Jerry Jinx Mouse. The character first appears, unnamed, in the animated short film Puss Gets the Boot (1940). His name is established as Jinx in promotional material. He is given the name Jerry in the Tom and Jerry short The Midnight Snack (1941).
  368. Mickey Mouse. The character first appears in the animated short film Plane Crazy (1928).
  369. Mike Mouse/Mighty Mouse. The character first appears, as Super Mouse, in the animated short film The Mouse of Tomorrow (1942). He is first called Mighty Mouse in The Wreck of the Hesperus (1944). His real name is established in the animated series Mighty Mouse: The New Adventures (1987).
  370. Minerva "Minnie" Mouse. The character first appears in the animated short film Plane Crazy (1928). Her full given name is established in a comic strip story "The Gleam" (1942).
  371. Timothy Mouse. The character first appears in the animated feature film Dumbo (1941).
  372. Fievel Mousekewitz. The character first appears in the animated feature film An American Tail (1986).
  373. Mousse. The character first appears in the Ranma 1/2 manga Chapter 43: "Attack of the Wild Mousse" (1988).
  374. Mowgli. The character first appears in the short story "In the Rukh" (1893).
  375. Mozu of Hoshido. The character first appears, as Mozume, in the video game Fire Emblem: If (2015). She is named Mozu in the North American release as Fire Emblem: Fates (2016).
  376. Ti'julk Mr'asz/Gates. The character first appears in the comic book Legion of Super-Heroes #66 (1995). His real name is established on supplemental material included in Legionnaires #50 (1997).
  377. Shiboline M'Ress. The character first appears in the Star Trek animated series episode "The Survivor" (1973). Her given name is established in the Star Trek: New Frontier novel Cold Wars, part of the Gateways crossover.
  378. Much the Miller's Son. The character first appears, perhaps, in the ballad A Gest of Robyn Hode (c. 1450).
  379. Harcourt "Harry" Mudd. The character first appears in the Star Trek television series episode "Mudd's Women" (1966).
  380. Binkie Singsong Muddlefoot. The character first appears in the Darkwing Duck animated series episode "A Duck by Any Other Name" (1991). Her maiden name is arbitrary.
  381. Herbert "Herb" Muddlefoot. The character first appears in the Darkwing Duck animated series episode "A Duck by Any Other Name" (1991).
  382. Herbert "Honker" Muddlefoot Jr. The character first appears in the Darkwing Duck animated series episode "That Sinking Feeling" (1991).
  383. Tankard "Tank" Muddlefoot. The character first appears in the Darkwing Duck animated series episode "Battle of the Brainteasers" (1991).
  384. Jonathan "Mudsy" Muddlemore/Funky Phantom. The character first appears in the The Funky Phantom animated series premiere episode "Don't Fool with a Phantom" (1971).
  385. Mufasa (lion). The character first appears in the animated film The Lion King (1994).
  386. Francis John Mulcahy. The character first appears in the novel MASH: A Novel about Three Army Doctors (1968).
  387. Fox Mulder. The character first appears in the pilot episode of the television series The X-Files (1992).
  388. Lalo Muldron/Micro. The character first appears in the comic book Superboy #212 (1975). The version in this timeline first appears, as Micro, in Legion of Super-Heroes #66 (1995).
  389. Leonard Mullen/Claw. The character first appears in the Gargoyles animated series episode "Metamorphosis" (1995). His real name is arbitrary.
  390. Mumm-Ra/Watankh. The character first appears in the Thundercats animated series debut episode "Exodus" (1985).
  391. John Munch. The character first appears in the Homicide: Life on the Street television series pilot episode "Gone for Goode" (1993).
  392. Max's Munchlax. The character first appears in the Pokémon Advanced Generation anime episode "With [May] Delicious Get [Munchlax]!" (2005).
  393. Armando Muñoz/Darwin. The character first appears in the comic book X-Men: Deadly Genesis #2 (2006).
  394. Arnold "Arn"/"Iron" Munro. The character first appears in the comic book Young All-Stars #1 (1987).
  395. Jill Munroe. The character first appears in the broadcast pilot film Charlie's Angels (1976).
  396. Ororo Munroe/Storm. The character first appears in the comic book Giant-Size X-Men #1 (1975). Her surname is established in X-Men #102 (1976).
  397. Edward "Eddie" Munster. The character first appears in the The Munsters television series pilot episode "Munster Masquerade" (1964).
  398. Herman Munster. The character first appears in the The Munsters television series pilot episode "Munster Masquerade" (1964).
  399. Lily Frump Munster. The character first appears in the The Munsters television series pilot episode "Munster Masquerade" (1964). Her maiden name is arbitrary.
  400. Marilyn Hyde Munster. The character first appears in the The Munsters television series premiere episode "Munster Masquerade" (1964).
  401. Kineckie Murdoch. The character first appears in the musical stage play Grease (1971).
  402. Henry "Howlin' Mad" Murdock. The character first appears in the The A-Team television series pilot episode "Mexican Slayride" (1983).
  403. Matthew "Matt" Murdock/Daredevil. The character first appears in the comic book Daredevil #1 (1964).
  404. Victoria Murdock/Asbestos Lady. The character first appears in the comic book Human Torch Comics #27 (1947).
  405. Alex Murphy/RoboCop. The character first appears in the film RoboCop (1987).
  406. Alexis "Lex" Murphy. The character first appears in the novel Jurassic Park (1990).
  407. Hazel "Hank" Murphy. The character first appears in the Sealab 2021 animated series preview episode "Radio Free Sealab" (2000). His given name is established in ???, and his nickname in ???
  408. Timothy "Tim" Murphy. The character first appears in the novel Jurassic Park (1990).
  409. Rui Murphy. The character first appears, as Mirei, in the video game Pokémon Colosseum (2003). She receives the name Rui in the English release (2004). Her surname is arbitrary.
  410. Michiko "Mickey" Musashi/Turbo. The character first appears in the comic book New Warriors #28 (1992).
  411. Mushu. The character first appears in the animated film Mulan (1998).
  412. Roy Mustang/Flame Alchemist. The character first appears in the Fullmetal Alchemist manga Chapter 4 (2001).
  413. Sugoroku "Solomon" Mutou. The character first appears in the Yu-Gi-Oh! debut manga chapter, "Duel One: Puzzle of the Gods", published in Shonen Jump magazine #42 (1996). His English nickname, "Solomon", comes from the English adaptation of the anime (2001).
  414. Yugi Mutou. The character first appears in the Yu-Gi-Oh! debut manga chapter, "Duel One: Puzzle of the Gods", published in Shonen Jump magazine #42 (1996).
  415. Mxyzptlk. The character first appears in the comic book Superman #30 (1944).
  416. Mycen of Rigel. The character first appears in the video game Fire Emblem: Gaiden (1992).
  417. Fred Myers/Boomerang. The character first appears in the comic book Tales to Astonish #81 (1966).
  418. Soseh Mykros/Nemesis. The character first appears in the comic book JSA Annual #1 (2000).
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