| 1400 Club |
| Aakon (Race) |
| Aaron Stankey |
| A'Askvarii (Race) |
| Abby St. Clair |
| Abdullah (Slave Trader) |
| Abe Beame |
| Abe Dansker |
| Abe Zimmer |
| Aberration (Rana Phillips) |
| Abigail Brand |
| Abner Croit |
| Abner Little |
| Abomination (Emil Blonsky) |
| Armand Muschio |
| Jiao (Secret Disciples of Strange) |
| Konstantin (Secret Disciples of Strange) |
| Abraham Adamson |
| Abraham Brown |
| Abraham Erskine |
| Abraham Klein |
| Abraham Lincoln |
| Abraxas (Abstract Entity) |
| Absorbing Man (Crusher Creel) |
| Absynthe (Abigail) |
| Abu Ben Hakim |
| Abu Dakir |
| Abu-Jamal Rodriguez |
| Abyss (Nils Styger) |
| Accolon |
| Ace (Bandit Leader) |
| Aces Wilde |
| Achebe |
| A-Chiltarians (Race) |
| Achmed (Arabian wizard) |
| Achmed el Gibar |
| Acolytes (Magneto) |
| Acrobat (Carl Zante) |
| Actor (Disguise Artist) |
| Acts of Vengeance Prime Movers |
| Adam Manna |
| Adam Warlock |
| Adaptoid |
| Adlai Schmidt |
| Admiral Perkins |
| Admiral Rickert |
| Admiral Shayes |
| Adolf Hitler |
| Adora (Xandarian Queen) |
| Adria (Witch) |
| Adrian Toomes |
| Advance Scout Three (Gramosian) |
| Advance Scout Two (Gramosian) |
| Advanced Corporation Board of Directors |
| Advanced Corporation Employees |
| Aegis (Trey Jason Rollins) |
| Ael-Dan (Kree) |
| Aerians (Race) |
| Aesir |
| Aftaab Lemar |
| Agamotto (Vishanti) |
| Agatha Harkness |
| Aged Genghis |
| Agent (Rick Mason) |
| Agent 13 (Elisabeth Ross) |
| Agent 22 (Hydra Infiltrator) |
| Agent Axis |
| Agent Kronsky |
| Agent Mallard |
| Agent Marigold |
| Agent R (Cynthia Glass) |
| Agent Stuart (FBI) |
| Agent X (Nijo) |
| Agent-Prime |
| Agents of Atlas |
| Aggamon |
| Aggression (Demon) |
| Aginar (Eternals) |
| Agnar (King of the Eagles) |
| Agnar the Fierce |
| Agni (Araman Nila) |
| Agon (Inhumans) |
| Ahab (Rory Campbell) |
| Ahh (Ngh's Good Counterpart) |
| Ahmet Abdol |
| AIM (Advanced Idea Mechanics) |
| AIM Agent 17 |
| AIM Agent Elliot |
| AIM Agent JT-3C |
| AIM Agent L77 (Adaptoid) |
| AIM Agent U31 (Adaptoid) |
| AIM Robot |
| AIM Scientists |
| AIM Synthoids |
| AIM Warbot |
| Airborne (Death Squad) |
| Aireo (Inhumans) |
| Nanna (Asgardians) |
| Aislinn |
| Ajak (Eternals) |
| Akbar (Collector's Servant) |
| Akiro |
| Akor |
| Al B. Harper |
| Al Hewetson |
| Al Milgrom |
| Al Stargrom |
| Alan Weiss |
| Alarich Wallenquist |
| Albert DeVoor |
| Albert Montenegro |
| Alchemoid |
| Aldrich Killian |
| Alessandro Brannex (Super-Adaptoid) |
| Alessandro di Cagliostro |
| Aleta (Aleta Ogord) |
| Alex Alaric |
| Alex DePaul |
| Alex Erde |
| Alex Nevsky |
| Alex Niven (Alex Nevsky) |
| Alex Summers |
| Alexander Haig |
| Alexander Rue |
| Alexander van Tilberg |
| Alexander Walsh |
| Alexandra Rasputin |
| Alexandria Knox |
| Alexei Vazhin |
| Alexi (Katrina's Brother) |
| Alexi Alexivitch |
| Alfie (Nazi Secret Agent) |
| Alfred Hitchcock |
| Alfred Queely |
| Alfred Savin |
| Alfredo Morelli |
| Alfredo Pechter |
| Alibar (thief) |
| Alice Joyce Maxfield |
| Alice Larkin |
| Alice Nugent |
| Alicia Masters |
| Alien Activities Commission |
| Alien Nanoplasm |
| Alison Arbogast |
| Alistair Rampson |
| Alistair Smythe |
| Alkhema |
| Allan Stevens |
| Allanson (Peace Corpse) |
| All-Devourer |
| Allied Soldiers |
| Allison Brickford |
| Aloysius Lafferty |
| Aloysius Thorndrake |
| Alpha (Council Agent) |
| Alpha the Ultimate Mutant |
| Alpha (Super-Ape) |
| Alpha Centaurians (Race) |
| Alpha Combat Units |
| Alpha Flight (Canadian Heroes) |
| Manimator (Laurent Levessaur) |
| Alpha Primitives (Race) |
| Alpha Team (Armored SHIELD Agents) |
| Alphonse deChanteaux |
| Alvin Barnes |
| Alvin Denton |
| Alyssa Gervase |
| Amadeus Cho |
| Amahl Farouk |
| Amalgi-Beast |
| Amanda Blake |
| Amanda Carter |
| Amanda Sefton (Jimaine Szardos) |
| Amazons |
| Ambassador Askwith |
| Ambassador Gregorvich |
| Ambassador Petrov |
| Amber Grant |
| Amber Sunrise |
| Ambrose Ellis |
| Amelia Voght |
| Amenhotep (Khufor) |
| Amenhotep (Khufor) (Imposter) |
| Amergin |
| American Dream (Shannon Carter) (Reality-982) |
| American Eagle (James Dore) |
| American Freedom Front |
| Ameridroid (Lyle Dekker) |
| Amiko Kobayashi |
| Amos Crawley |
| Amos Jardine |
| Amos Moses |
| Ampere (Circle of Pavane) |
| Amphibian (Kingsley Rice) (Reality-712) |
| Amphibion (Qnax) |
| Amphibius (Unrevealed) |
| Amphos (Tribbitites) |
| Amtor the Unspeakable |
| Amy Conklin |
| Amy Lou Johnston |
| Amy Mavity |
| Amy Powell |
| Anabolicus |
| Anachronauts |
| Anaconda (Blanche Sitznski) |
| Anastasia Sablinova |
| Anatol Dubrov |
| Ancestor (Mandarin's Avatar) |
| Ancient One (Yao) |
| Ancient Traveler |
| Andre Boullion |
| Andre LeClare |
| Andrea Timly |
| Andreas De Ruyter |
| Andrei Gorlovich |
| Andrew Chord |
| Andrew Davis |
| Andrew Jackson Hawk |
| Andrew Regal |
| Andro (Doomsman (Android)) |
| Android Man |
| Android X-4 |
| Andromeda (Atlanteans) |
| Andromeda Oarsmen |
| Andrones (Robots) |
| Iron Man (Andros Stark) (Reality-8192) |
| Andy Rooney |
| Andy Stockwell (Boris Bullski) |
| Anelle (Skrulls) |
| Angar the Screamer (David Alan Angar) |
| Angel (Warren Worthington III) |
| Angel (Warren Worthington III) (Reality-811) |
| Angela (Trust Member) |
| Angela Cord |
| Angela Lynne |
| Angelica Jones |
| Angelo Baldini |
| Angelo Macon |
| Angrir (Thing (Ben Grimm)) |
| Angus MacGregor |
| Angus MacTavish |
| Angus MacWhirter |
| Animal (Satan's Servants) |
| Ani-Men |
| Animutants |
| Anita Cartelli |
| Anjiro Shigeta |
| Ann Christopher |
| Ann MacIntosh |
| Ann Nocenti |
| Ann Raymond |
| Ann Reynolds |
| Anna Nelson |
| Anna Watson |
| Anna Wei |
| Anne Marie Menzie |
| Anne-Marie Baker |
| Anne-Marie Cortez |
| Annie (Noh-Varr's Girlfriend) |
| Annie Deitz |
| Annie Lanning |
| Annie Yuan |
| Annihilus |
| Ann-Marie Hoag |
| Anskar |
| Answer (Aaron Nicholson) |
| Antaeus (Olympians) |
| Anthony Cavelli |
| Anthony Gardenia |
| Anthony Serba |
| Anthony Stark |
| Anthony Stark (as Iron Man) |
| Anthony Stark (Reality-68091) |
| Anthony Stark (Reality-96020) |
| Iron Man (Anthony Stark) (Reality-10071) |
| Anthony Stark LMD |
| Antigone |
| Ant-Man (Eric O'Grady) |
| Ant-Man (Hank Pym) |
| Ant-Man (Scott Lang) |
| Anton Bader |
| Anton DeLionatus |
| Anton Trojak |
| Anton Vanko |
| Anvil (Johnny Anvil) |
| Apalla (Queen of the Sun) |
| Ape Horgon |
| Ape-Man (Monk Keefer) |
| Ape-Man (Roy McVey) |
| Apocalypse (En Sabah Nur) |
| Apocalypse's Horsemen |
| Apocryphus |
| Apollo (Olympians) |
| April Maye |
| April Sommers |
| Aquanoids (Men-Fish) |
| Aquarian (Wundarr) |
| Aquarius (Darren Bentley) |
| Aquarius (Zachary Drebb) |
| Aqueduct (Peter Van Zante) |
| Aquon (Amphibious Monster) |
| Ara Tanzerian |
| Arab (Ringo Kid's Horse) |
| Aracht'yr |
| Aragorn (winged steed) |
| Araki (Shi'ar) |
| Arana (Anya Corazon) |
| Arcade (Unrevealed) |
| Archangel (Warren Worthington III) |
| Arch-E-5912 |
| Archeopians (Race) |
| Archer College Board of Trustees |
| Archer Emmet |
| Archie Bivens |
| Archie Goodwin |
| Archon (Unrevealed) |
| Ares (God of War) |
| Arex (Polar Eternal) |
| Arges (Cyclopes) |
| Arides (Kree) |
| Ariel (Kitty Pryde) |
| Ariel (Zephyreans) |
| Aries (Grover Raymond) |
| Aries (Marcus Lassiter) |
| Aries (Oscar Gordon) |
| Arishem the Judge (Celestials) |
| Arizona State Patrol |
| Arkin the Weak |
| Arkon's Grand Vizier |
| Arkon's Warlord |
| Arkus (Atlanteans) |
| Armada From Beyond |
| Armadillo (Antonio Rodriguez) |
| Armand Pelps |
| Armond DuBroth |
| ARMOR Agents |
| Armored Army Unit |
| Arms Merchant (Andreas Kapelos) |
| Armstrong Smith |
| Arnim Zola |
| Arno Stark Jr (Reality-8410) |
| Arnold Brown |
| Arnold Cameron |
| Aroke (Shi'ar Chamberlain) |
| Aron (Watchers) |
| Arranger (Oswald P. Silkworth) |
| Arsenal (Robot) |
| Arsenal (Robot) (Alpha Unit) |
| Arsenal (Robot) (Beta Unit) |
| Art Richmond |
| Arte Johnson |
| Artemis (Olympians) |
| Artemus Pithins |
| Arthur Chekov |
| Arthur Dearborn |
| Arthur Nagan |
| Arthur Pendragon |
| Arthur Pendragon Robot |
| Arthur Stacy |
| Arthur Thornhill |
| Arturo Frazen |
| Asano Kimura |
| Asbestos Lady (Victoria Murdock) |
| Asbestos Man (Orson Kasloff) |
| Asgard Elders |
| Asgardian Beast-Fish |
| Asgardian Winged Horses |
| Asgardians (Race) |
| Ashirov (Ayisha's Father) |
| Ashley Sanders |
| Aske |
| Askew Electronics Employees |
| Asmodeus (Dr. Charles Benton) |
| Asmodeus (Inhumans) |
| Asp (Cleo Nefertiti) |
| Assassin (Dr. Octopus-employed) |
| Assassin (Maria) |
| Asti the All-Seeing |
| Astra (Imperial Guard) |
| Astra (Polemachan) |
| Astrella Carpenter |
| Astrologer Royal |
| Asylum (Unrevealed) |
| Atha Williams |
| Athena (Olympians) |
| Athos (Bodyguard) |
| Atlanteans (Race) |
| Atlas (Erik Josten) |
| Atlas (Olympians) |
| Atom Smasher (Kevin Leonardo) |
| Atom Smasher (Ronald English) |
| Atomic Energy Commission members |
| Atreus |
| Atropos |
| Attractive Lad (Aundray Phelps) |
| Attuma (Atlanteans) |
| Atul (Watchers) |
| Atum the God-Eater |
| Aubrey Pearson |
| August D'Angelo |
| August Personage in Jade (Yu-Ti (Nu-An)) |
| Augustine Cross |
| Aunt Serr |
| AUNTIE (Robot) |
| Auntie Matilda |
| Aurelia Lumpen-Parvenu |
| Aurora (Jeanne-Marie Beaubier) |
| Autolycus (Starship Captain) |
| Automatoid #N4256 |
| Avalanche (Dominic Petros) |
| Avalon (Knight of the Inner Realm) |
| Avengers |
| Avengers (Reality-267) |
| Avengers (Reality-355) |
| Avengers (Reality-374) |
| Avengers (Reality-689) |
| Avengers (Reality-86501) |
| Avengers (West Coast) |
| Avengers Academy |
| Avengers Club |
| Avengers Crew |
| Avius (Inhumans) |
| Awesome Android |
| Axi-Tun (Race) |
| Axon (Erin Cicero) |
| Axon-Karr |
| Ayisha Ashirov |
| Ayshera |
| Aztec Indians |
| Azzari the Wise |
| Baal (Universal Computer) |
| Ba-Bani (Race) |
| Babs Bendix |
| Baby Jack |
| Badoon (Race) |
| Baker (Gangster) |
| Balder (Asgardians) |
| Baldy Kolak |
| Balor (Fomor) |
| Baltag |
| Balthakk |
| Baluurians (Race) |
| Bambi Arbogast |
| Bambi Modica |
| Bambu (Servant) |
| Bamfs (Race) |
| Banshee (Horse) |
| Banshee (Sean Cassidy) |
| Bar Korkus |
| Barachuudar |
| Barack Obama |
| Barbara Bush |
| Barbara Kaxton |
| Barbara Morse |
| Barbara Norriss |
| Barbara Rave |
| Barbarus (4-armed mutate) |
| Barbi Kepke |
| Barnacle (Mortimer Everett) |
| Barney Barton |
| Barney Bushkin |
| Barney Muggins |
| Barney Muller |
| Barney Roberts |
| Barney Wicker |
| Barok |
| Baron Blood (John Falsworth) |
| Baron Brimstone (Walther Theodoric) |
| Baron Hugo |
| Baron Macabre (Unrevealed) |
| Baron Mordo (Karl Amadeus Mordo) |
| Baron Mordo's Minions |
| Baron Radzik |
| Baron Rockler |
| Baron Samedi (AIM Agent) |
| Baron von Blitzschlag (Wernher von Blitzschlag) |
| Baron Wolfgang von Strucker |
| Baron Zemo (Heinrich Zemo) |
| Baron Zemo (Heinrich Zemo) (Imposter) |
| Baron Zemo (Helmut Zemo) |
| Baron Zemo Imposter (Franz Gruber) |
| Baron Zemo's Slaves |
| Baroness Hilda Zemo |
| Baroness Rockler |
| Barry Carson |
| Barry Foxxe |
| Barry Hapgood |
| Barry Kaplan |
| Barry Kranz |
| Barry Starr |
| Bart Slade |
| Bartholomew Jones |
| Barton Blaze |
| Barton Grimes |
| Baryn (Skrulls) |
| Basallo |
| Bashenga |
| Basil Frankenstein |
| Basilisk (Basil Elks) |
