Mad Hatter - Batman #49, 10-11/48; Detective Comics #230, 4/56
Mad Thinker - Fantastic Four #15, 6/63
Madame Medusa - Fantastic Four #36, 3/65
Maelstrom - Marvel Two-In-One #71, 1/81
Magica de Spell - Uncle Scrooge #36, 12/62
Magneto - X-Men #1, 9/63
Magpie (new) - Man of Steel #3, 11/86
Magus - Strange Tales #178, 2/75; (re-intro) Warlock and the Infinity Watch #7, 8/92
Malevolence (Mephisto's daughter) - Guardians of the Galaxy #7, 12/90
Man-Ape - Avengers #62, 3/69
Man-Bat - Detective Comics #400, 6/70
Man-Wolf - Amazing Spider-Man #124, 9/73
Mandarin - Tales of Suspense #50, 2/64
Manhunters - 1st Issue Special #5, 8/75
Mephisto - Silver Surfer #3, 12/68
Metallo (Jor-El's robot) (1st app.) - Superboy #49, 6/56; (new) Superman #310, 4/77; (new) Superman #1, 1/87; (re-intro) Action Comics #252, 5/59; (re-intro, 3rd app.) Adventure Comics #276, 9/60
Microwave Man - Action Comics #487, 9/78
Mime - Batman #412, 10/87
Mimic - X-Men #19, 4/66
Mirror Master - Flash #105, 2-3/59
Mist - Adventure Comics #67, 10/41
Mister Element - Showcase #13, 3-4/58
Mister Sinister - X-Men #221, 9/87
Modok - Tales of Suspense #94, 10/67
Modred the Mystic (re-intro) - Darkhold #3, 12/92
Mole Man - Fantastic Four #1, 11/61
Molecule Man - Fantastic Four #20, 11/63
Molten Man - Amazing Spider-Man #28, 9/65
Morbius the Living Vampire - Amazing Spider-Man #101, 10/71
Mordru - Adventure Comics #369, 6/68
Mortan (Adam Strange foe) - Mystery In Space #62, 9/60
Mr. Atom - Captain Marvel Adventures #78, 11/47
Mr. Baffle - Detective Comics #63, 5/42
Mr. Freeze - Batman #121, 2/59
Mr. Hyde - Journey Into Mystery #99, 12/63
Mr. Mind - Captain Marvel Adventures #22, 3/43; (re-intro) Shazam! #2, 4/73
Mr. Mxyzptlk - Superman #131, 8/59; (new) Superman #11, 11/87; Superman #30, 10/44
Mr. Tawny - Captain Marvel Adventures #79, 12/47
Multi-Man - Challengers of the Unknown #14, 12-1/59-60
Mysterio - Amazing Spider-Man #13, 6/64
Nightmare - Strange Tales #110, 7/63
Nightshade - Captain America #164, 8/73
Nitro - Captain Marvel #34, 9/74
Ocean Master - Aquaman #29, 10/66
Outsider - Detective Comics #334, 12/64
Owl - Daredevil #3, 8/64
Paladin - Daredevil #150, 2/78
Parasite - Action Comics #340, 8/66; Fury of Firestorm #58, 4/87
Peg-leg Pete - Mickey Mouse #3, 1933
Penguin - Detective Comics #58, 12/41; (S.A.) Batman #155, 4/63
Pied Piper - Flash #106, 4-5/59
Pieface - Green Lantern #2, 9-10/60
Plant-Master - Atom #1, 6-7/62
Plunderer - Daredevil #12, 1/66
Poison Ivy - Batman #181, 6/66
Porcupine - Tales To Astonish #48, 10/63
Prankster - Action Comics #51, 8/42
Princess Python - Amazing Spider-Man #22, 3/65
Professor Amos Fortune - Justice League of America #6, 8-9/61
Professor Zoom - Flash #139, 9/63
Prowler - Amazing Spider-Man #78, 11/69
Psycho Pirate - All Star Comics #23, Win '44-45
Psycho-Man - Fantastic Four Annual #5, 11/67
Puma - Amazing Spider-Man #256, 9/84
Punisher - Amazing Spider-Man #129, 2/74
Puppet Master - Batman #3, Fall '40; Fantastic Four #8, 11/62
Rainbow Raider - Flash #286, 6/80
Rama-Tut - Fantastic Four #19, 10/63
Rampage - Superman #7, 7/87
Rancor (1st full app.) - Guardians of the Galaxy #9, 2/91; (cameo) (descendant of Wolverine) Guardians of the Galaxy #8, 1/91
Ras Al Ghul - Batman #232, 7/71
Reaper - Batman #237, 12/71
Red Ghost - Fantastic Four #13, 4/63
Red Skull - Captain America Comics #1, 3/41; (S.A.) Tales of Suspense #65, 5/65
Rhino - Amazing Spider-Man #41, 10/66
Riddler - Detective Comics #140, 10/48; (S.A.) Batman #171, 5/65
Ringmaster - Incredible Hulk #3, 9/62
Rose - Amazing Spider-Man #253, 6/84
Rose and the Thorn - Flash Comics #89, 11/47; (new) Superman's Girlfriend Lois Lane #105
Saber-Tooth - Flash #291, 11/80
Sabretooth - Iron Fist #14, 8/77
Sandman - Amazing Spider-Man #4, 9/63
Sandstorm - Web of Spider-Man #107, 12/93
Sargon (re-intro) - Flash #186, 8/69
Sargon the Sorcerer (1st story app.) - All-American Comics #26, 5/41; (text only) All-American Comics #24, 3/41
Sauron - X-Men #60, 9/69
Scarecrow - Tales of Suspense #51, 3/64; World's Finest Comics #3, Fall '41; Dead of Night #11, 8/75; (S.A.) Batman #189, 1967
Schemer - Amazing Spider-Man #83, 4/70
Scorpion - Amazing Spider-Man #20, 1/65
Serpent - Crown Sub-Mariner #9, 1/69
Sha-Shan - Amazing Spider-Man #108, 5/72
Shade (modern) - Flash #298, 6/81
Shadow Thief - Brave and the Bold #36,6-7/61
Shaper - Incredible Hulk #155, 9/72
Shark - Amazing-Man Comics #6, 10/39; Green Lantern #24, 10/63
Shocker - Amazing Spider-Man #46, 3/67
Shotgun - Daredevil #272, 9/89
Shroud - Super-Villain Team-Up #5, 4/76
Signalman - Batman #112, 12/57; (S.A.) Detective Comics #466
Silver Banshee - Action Comics #495, 12/87
Silvermane - Amazing Spider-Man #73, 6/69
Silver Samurai - Daredevil #111, 6/74
Sinestro - Green Lantern #7, 7-8/61
Sivana - Whiz Comics #1, 2/40
Sivana, Jr. - Captain Marvel Adventures #52, 1/46
Sky Pirate - Green Lantern #27, 8-9/47
Solarr - Captain America #160, 4/73
Solo - Web of Spider-Man #19, 10/86
Solomon - Grundy All-American Comics #61, 11/44; (S.A.) Showcase #55, 3-4/65
Sonar - Green Lantern #14, 7/62
Sorcerer - Alpha Flight #71, 5/89
Speed McGee - Flash #5, 10/87
Spirit of Vengeance (futuristic Ghost Rider) - Guardians of the Galaxy #13, 6/91
Spyder - New Mutants #68, 10/88
Star Thief - Warlock #14, 10/76
Stilt-Man - Daredevil #8, 6/65
Sting Ray - Sub-Mariner #19, 11/69
Stranger - X-Men #11, 5/65
Sub-Mariner (S.A) - Fantastic Four #4, 5/62
Sunburst - New Adventures of Superboy #45, 9/83
Super Skrull - Fantastic Four #18, 9/63
Swordsman - Avengers #19, 8/65
Tantrum - Night Thrasher: Four Control #2, 11/92
Tarantula - Amazing Spider-Man #134, 7/74
Taskmaster - Avengers #119, 1/80
Tattooed Man - Green Lantern #23, 9/63
Terra-Man - Superman #249, 4/72
Terrax - Fantastic Four #211, 10/79
Terrible Tinkerer - Amazing Spider-Man #2, 5/63
Thanos - Iron Man #55, 2/73; (re-intro) (cameo) Silver Surfer #34, 2/90; (re-intro) (full app.) Silver Surfer #35, 3/90
Thinker - All-Flash #12, Fall '43
Thundra - Fantastic Four #129, 12/72
Tiger Shark (new) - Namor, the Sub-Mariner #35, 2/93; (S.A.) Sub-Mariner #5, 9/68
Time Trapper - Adventure Comics #321, 6/64
Titanium Man - Tales of Suspense #69, 9/65
Titano - Superman #127, 2/59
Toad - X-Men #4, 3/64
Tombstone - Web of Spider-Man #36, 3/88; (full app.) Spectacular Spider-Man #138, 5/88
Top - Flash #122, 6-7/61
Tornado Tyrant - (later becomes Red Tornado) - Mystery In Space #61, 8/60
Torpedo - Daredevil #126, 8/75
Toyman - Action Comics #64, 9/43; (new) Superman #13, 1/88; (S.A.) Action Comics #432, 2/74
Trapster (aka Paste-Pot Pete) - Strange Tales #104, 1/63
Trauma - Incredible Hulk #394, 6/92
Trickster - Flash #113, 6-7/60
Turtle - Showcase #4, 9-10/56
Tweedledum & Tweedledee - Detective Comics #74, 4/43
Two-Face - Detective Comics #66, 8/42; (S.A) World's Finest #173, 1/68
Typhoid Mary - Daredevil #254, 5/88
Ulik - Thor #137, 2/67
Ultron - Avengers #55, 8/68
Umar - Strange Tales #150, 11/66
Unicorn - Tales of Suspense #56, 8/64
Universo - Adventure Comics #349, 10/66
Unus the Untouchable - X-Men #8, 11/64
U. S. Jones - Wonderworld Comics #28, 8/41
Vandall Savage - Green Lantern #10 ,Win '43; (S.A.) Flash #137, 1963
Vanisher - X-Men #2, 11/63
Venom (1st full app.) - Amazing Spider-Man #300, 5/88; (cameo w/costume) Amazing Spider-Man #298; (cameo, no costume), #299, 4/88
Vindicator - X-Men #109, 5/78
Viper - Captain America #110, 2/69
Vulture - Amazing Spider-Man #2, 5/63
Warpath - X-Men #193, 5/85
Watcher - Fantastic Four #13, 4/63
Weapon Omega - Alpha Flight #102, 11/81
Weather Wizard - Flash #110, 12-1/59-60
Whirlwind (Human Top) - Tales to Astonish #50, 12/63
White Queen - X-Men #132, 4/80
Wizard - Strange Tales #102, 11/62
Zzzax - Incredible Hulk #166, 8/73
Heroes A-D | Heroes E-L | Heroes M-R | Heroes S-Z | Villains A-L
Villains M-Z |
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