A
Abomination – Tales to Astonish #90 (1967)
Absorbing Man – Journey Into Mystery #114 (1965)
Amazo – Brave and the Bold (JLA) #30 (1960)
Apocalypse – X-Factor #5 (1986)
.
B
Bane – Batman: Vengeance of Bane #1 (1993)
Baron Zemo – Avengers #6 (1964)
Batman Who Laughs – Teen Titans #12, Vol 6 (2016)
Beyonder – Secret Wars #1 (1984)
Bizarro – Superboy #68 (1958)
Black Adam (Fawcett/DC) – Marvel Family #1 (1945)
Black Manta – Aquaman #35 (1967)
Black Mask – Batman #389 (1985)
Blacksmith – Flash: Iron Heights #1 (2001)
Blastarr – Fantastic Four #62 (1967)
Blob – X-men #3 (1964)
Bolivar Trask – X-Men #14 (1965)
Brainiac – Action Comics #242 (1958)
Brotherhood of Evil Mutants – X-men #4 (1964)
Bullseye – Daredevil #131 (1976)
.
C
Captain Boomerang – Flash #117 (1960)
Captain Cold – Showcase #8 (1957)
Carnage – Amazing Spider-man #361 (1st Full App.) (1993)
Catwoman – 1st Full App. as Catwoman in Costume Batman #3 (1940)
Chameleon – Amazing Spider-Man #1 (1963)
Cheetah – Wonder Woman #6 (1943)
Clayface – Detective Comics #40 (194)
Constrictor – Incredible Hulk #212 (1977)
Court of Owls – Batman #2 (Vol. 2, 2011)
Crime Syndicate of America – Justice League of America #29 (1964)
Crossbones – Captain America #359 (1989)
Crossfire – Marvel Two-In-One #52 (1979)
Cyber – Marvel Comics Presents #85 (cameo)/ #86 (full – 1991)
.
D
Dark Phoenix – Uncanny X-Men #139 (1980)
Darkseid – Superman’s Pal Jimmy Olsen #134 (1970)
Deadpool – New Mutants #98 (1991)
Deadshot – Batman #50 (1950)
Deathlok – Astonishing Tales #25 (1974)
Deathstroke – New Teen Titans #2 (1980)
Doctor Doom – Fantastic Four #5 (1962)
Doc Octopus – Amazing Spiderman #3 (1963)
Doomsday – 1st Full App. Superman: The Man of Steel #18 (1993)
Doctor Light – Justice League of America #12 (1962)
Dormammu – Strange Tales #126 (1964)
.
E
Egghead – Tales to Astonish #38 (1962)
Electro – Amazing Spiderman #9 (1964)
Enchantress – Journey Into Mystery #103 (1964)
Equus – Superman, Vol 2 #206 (2004)
Evil Ernie – Evil Ernie #1 (1991)
Executioner (Skurge) – Journey Into Mystery #103 (1964)
.
F
Fabian Cortez – X-MenVol. 2 #1 (1991)
Famine (Horseman) – X-Factor #12 (1987)
Felix Faust – Justice League of America #10 (1962)
Fin Fang Foom – Strange Tales #89 (1961)
Firebug – Batman #318 (1979)
Frightful Four – Fantastic Four #36 (1966)
G
Galactus – Cameo Fantastic Four #48 1st Full App. Fantastic Four #49 (1966)
Gladiator (Melvin Potts) – Daredevil #18 (1966)
Green Goblin – (Norman Osborn) Amazing Spiderman #14 (1964)
.
H
Harley Quinn – The Batman Adventures #12 (1994)
High Evolutionary – Thor #134 (1966)
Hobgoblin – Amazing Spiderman #238 (1983)
Hood (Parker Robbins) – The Hood #1 (2002)
Hugo Strange – Detective Comics #36 (1940)
.
J
Jackal – Amazing Spider-Man #129 (1974)
Jigsaw (Punisher)- Amazing Spiderman #162 (1976)
Joker – Batman #1 (1940)
Juggernaut – X-men #12 (1965)
.
K
KGBeast – Batman #417 (1988)
Killer Frost – (Crystal Frost) Firestorm #3 (June 1978); (Louise Lincoln) Firestorm (vol. 2) # 21 (March 1984); (Caitlin Snow) Fury of Firestorm: The Nuclear Man #19 (June 2013)
Kingpin – Amazing Spiderman #50 (1967)
Kraven the Hunter – Amazing Spiderman #15 (1964)
.
L
Lady Death – Evil Ernie #1 (1991)
Lady Deathstrike – Alpha Flight #33 (1986)
Leader – Tales to Astonish #62 (1965)
Legion (David Haller) – New Mutants #25 (1985)
Lex Luthor – Action Comics #23 (1940)
Livewire – Superman Adventures #5 (1997)
Living Laser – Avengers #34 (1966)
Lizard – Amazing Spiderman #6 (1963)
Lobo – Omega Men #3 (1983)
Loki – Journey Into Mystery – #85 (1962)
.
M
Mad Hatter – Batman #49 (1948)
Mad Jim Jaspers – Marvel Superheroes #377 (1981)
Mad Thinker – Fantastic Four #15 (1963)
Magenta – New Teen Titans #17 (1982)
Magneto – X-men #1 (1963)
Magus (Adam Warlock) – Strange Tales #178 (1975)
Magus (X-Men) – New Mutants #18 (1984)
Major Disaster – Green Lantern Vol. 2 #43 (1966)
Man-Bat – Detective Comics #400 (1970)
Mandarin – Tale of Suspense #50 (1964)
Marauders – Uncanny X-men #210 (1986)
Marquis of Death – 1985 #2 (2008) as Clyde Wyndcham; Fantastic Four #562 (2009) as Marquis
Marvel Zombies – Ultimate Fantastic Four #21 (2005)
Mastermind – X-Men #4 (1964)
Master Mold – X-Men #15 (1965)
Masters of Evil – Avengers #6 (1964)
Maximus – Fantastic Four #47 (1966)
Mephisto – Silver Surfer Vol. 1 #3 (1968)
Metallo – Action Comics #252 (1959)
Mimic – X-men #19 (1966)
Mirror Master – The Flash #105 (1959)
Mister Hyde – Journey Into Mystery #99 (1963)
Mister Sinister – X-men #221 (1989)
Modok – Tales of Suspense #94 (1967)
Mojo – Longshot #3 (1985)
Molecule Man – Fantastic Four #20 (1963)
Mole Man – Fantastic Four #1 (1961)
Molten Man – Amazing Spiderman #28 (1965)
Mongul – DC Comics Presents #27 (1980)
Morgan le Fey – Black Knight #1 (1955)
Morlun – Amazing Spider-Man #30 vol. 2 (2001)
Mr. Freeze – Batman #121 (1959)
Mxyztplk – Superman #30 (1944)
Mysterio – Amazing Spiderman #13 (1964)
Mystique – Ms. Marvel #16 (1978)
.
N
Nightmare – Strange Tales #110 (1963)
Nitro – Captain Marvel #34 (1974)
Norman Osborn – Amazing Spider-Man #14 (1964)
Nuke – Daredevil #232 (1985)
.
O
Ocean Master – Aquaman #29 (1966)
Omega Men – Green Lantern #141 (1981)
Omega Red – X-men #4, vol. 2 (1991)
Onslaught – X-Man #15 (1996)
Owl – Daredevil #3, Vol 1 (1964)
.
P
Penguin – Detective Comics #58 (1941)
Phalanx – Uncanny X-men #311 (1994)
Poison Ivy – Batman #181 (1966)
r
Purple Man – Daredevil #4 (1963)
.
R
Ra’s al Ghul – Batman #232 (1971)
Reverse-Flash – The Flash #139 (1963)
Red Skull – Captain America Comics #7 (1941)
Rhino – Amazing Spiderman #41 (1966)
Riddler – Detective Comics #140 (1948) Silver Age App. Batman #171 (1965)
.
S
Sabretooth – Iron Fist #14 (1977)
Saint of Killers – Preacher #2 (1995)
Sandman – Amazing Spiderman #4 (1963)
Scarecrow – World’s Finest Comics #3 (1941)
Scorpion – Amazing Spiderman #20 (1964)
Sentinels – X-men #14 (1965)
Sinestro – Green Lantern #7 (1961)
Speed Demon – Amazing Spider-Man #222 (1981)
Spiral – Longshot #1 (1985)
Stilt-Man – Daredevil #8 (1965)
.
T
Talia (Ra’s al Ghul’s Daughter) – Detective Comics #411 (1971)
Taskmaster – Avengers #195 (Cameo) #196 (1st Full App.) (1980)
Thanos – Iron Man #55 (1973)
Thinker – All Flash #12 (1943)
Thunderbolts – Incredible Hulk #449 (1997)
Toad – X-men #4 (1964)
Two Face – Detective Comics #66 (1942) Silver Age App. Batman #234 (1971)
.
U
Ultron – Avengers #54 cameo, Avengers #55 Full (1968)
Unus the Untouchable – (Uncanny) X-Men #8 (1963)
V
Venom – (cameos) Amazing Spiderman #298-299 – #300 (1st Full Appearance) (1988)
Vixen – Action Comics #521 (1981)
Vulture – Amazing Spiderman #2 (1963)
Vulcan (Gabriel Summers) – X-Men: Deadly Genesis #1
.
W
Wendigo – Incredible Hulk #162 (1973)
Whiplash (Iron Man) – Tales of Suspense #97 (1968)
White Queen (Emma Frost) – X-men #129 (1980)
.
X
Xemnu – Journey Into Mystery #62 (1960)
Y
Yancy Street Gang – Fantastic Four #14 (1963)
Z
Zaran – Master of Kung-Fu #77 (1979)
Zoom – Flash Vol. 3 #197 (2003)
Harley Quinn’s 1st comic book appearance was Batman Adventures #12 (1993) not mad Love #1
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you’re right. Thanks!
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Omega Red’s 1st app was in X-Men 4, not 18
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The embarrassing part is that i KNOW that lol. Thanx for the heads up! -Jay
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