- 2-D Man
- AIM Agent
- Aayla Secura
- Abbott & Costello
- Abe Sapien
- Abel
- Abel Cuvier
- Abin Sur
- Abra Kadabra
- Absorbency Boy / Earth Man
- Absorbing Man
- Abuse
- Abyssma
- Ace
- Ace Morgan
- Ace the Bathound
- Achilles
- Acro-Bat
- Action Boy / Kid Action
- Adam
- Adam Strange
- Adam Warlock
- Adara
- Adolf Hitler
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- Aeneas the Demigod
- Agatha Harkness
- Agent Liberty
- Agent of Death
- Aggregor
- Ahtier
- Air-Man
- Air-Walker
- Airboy
- Airwave (Harold Jordan)
- Airwave (Larry Jordan)
- Al Bizarro
- Alan Scott
- Alex Fairchild
- Alexander Luthor
- Alfred Pennyworth
- Alia
- Alias the Spider
- Alien
- Alley-Kat-Abra
- Alloy
- Allura In-Ze
- Alpha Centurion
- Amadeus Cho
- Amalgam (Alvin Bundy)
- Amanda Waller
- Amanita
- Amazing Grace
- Amazing Man (Will Everett)
- Amazo (Cartoon)
- Amazo (Classic)
- Amazon
- Amazon Warriors
- Ambush Bug
- American Crusader
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- Amethyst
- Amon Sur
- Ampa Nnn
- Amphibian
- Amy Lou
- Amygdala
- An Ryd
- Anarky
- Andre Briggs
- Andromeda (Laurel Gand)
- Angel (Buffy)
- Angel / Archangel
- Angel Hawk
- Angelique
- Angle Man
- Animal Lad
- Animal Man
- Annihilator
- Annihilus
- Anomaly
- Ant Man (Scott Lang)
- Ant Man / Giant Man / Goliath / Yellowjacket (Hank Pym)
- Antennae Lad
- Anthro
- Anti-Fate
- Anti-Green Lantern
- Anti-Lad
- Anti-Monitor
- Anton Arcane
- Antonio
- Anya Jenkins
- Anya Savenlavich
- Apache Chief
- Ape-X
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- Apocalypse
- Apokolips Commander
- Apokolips Soldier
- Apollo
- Apollo (Amalgam)
- Apollo (Olympic Gods)
- Apros
- Aqua-Melvin
- Aquabeast
- Aquagirl (Lorena Marquez)
- Aquagirl (Marina)
- Aquagirl (Marina Justice Lords)
- Aquagirl (Tula I)
- Aquagirl (Tula II)
- Aqualad (Kaldur'ahm)
- Aqualad / Tempest (Garth)
- Aquaman
- Aquaman (Justice Lords)
- Aquaman Jr.
- Aquamaria
- Ar-Val
- Arachnid
- Arcaana
- Arcade
- Arcanna
- Archer (Oliver Queen)
- Archeress (Aline White)
- Archon Zgmora
- Arella
- Ares
- Aresia
- Argent (Toni Monetti)
- Argus
- Ariel
- Arisia
- Arkillo
- Arkkis Chummuck
- Arm-Fall-Off Boy / Splitter
- Armageddon (DC)
- Armory
- Arnim Zola
- Arrowette
- Artemis (WildC.A.T.S.)
- Artemis / Requiem / Wonder Woman
- Ash
- Ash Pak Glif
- Asmodel
- Assassin
- Atlan
- Atlas
- Atlas (Teen Titans)
- Atlas / Goliath (Erik Josten)
- Atmos
- Atmosphere
- Atom (Al Pratt)
- Atom (Justice Lords)
- Atom (Ray Palmer)
- Atom (Ryan Choi)
- Atom (Tangent)
- Atom Eve
- Atom Smasher / Nuklon
- Atomic Skull
- Atomik
- Atrocitus
- Atrophos
- Attica
- Aura
- Aurakles
- Aurora (Alpha Flight)
- Aurora (Crime Syndicate)
- Authority
- Avalanche
- Aveline de Grandpré (Assassin's Creed)
- Avia
- Axis
- Aya
- Azangel
- Azrael (Jean Paul Valley)
- Azrael (alien)
- Aztek
- B'ox
- Baby Doll
- Backlash
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- Balm
- Bane
- Banshee (Jim O'Donnell)
- Banshee (Sean Cassidy)
- Bar-El
- Barin Char
- Barnacle Man
- Baron Blitzkrieg
- Baron Strucker
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- Baron Winters & Merlin
- Baron Zemo
- Baroness
- Baroness Blitzkrieg
- Baroness Von Gunther
- Barrage (Phillip Karnowsky)
- Barreer Wot
- Bat-Boy (Aaron Langstrom)
- Bat Joker
- Bat Lash
- Bat Sentry
- Batallion (Jackson King)
- Batbot
- Batboy (Rule 63)
- Batcave
- Batgirl (Justice Lords)
- Batgirl / Blackbat (Cassandra Cain)
- Batgirl / Flamebird / Hawkfire (Betty / Bette Kane)
- Batgirl / Oracle (Barbara Gordon)
- Batgirl Beyond
- Batjack
- Batman (Bruce Wayne)
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- Batman (Thomas Wayne)
- Batman Beyond (Justice Lords)
- Batman of Zurr-En-Arrh (Tlano)
- Batmite
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- Batroc
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- Batwing
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- Batwoman (Kate Kane)
- Batwoman (Kathy Kane)
- Batwoman (Kingdom Come)
- Batzarro
- Baxter Stockman
- Bayou Jack
- Bazooka
- Beach Head
- Beam Beagle
- Beast
- Beast Boy (Ilshu Nor)
- Beast Boy / Changeling (Garfield Logan)
- Beast Man
- Beautiful Dreamer
- Beauty Blaze
- Beetle / Mach V
- Bel Juz
- Bellerophon
- Ben 10
- Bengali
- Benn Pares
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- Beppo
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- Biohazard
- Bionic Woman
- Bionic Woman (Jamie Sommers)
- Bird
- Birdman
- Bishop
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- Bizarro (Justice Lords)
- Bizarro Aquaman
- Bizarro Flash
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- Black Adam
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- Black Canary
- Black Canary (Justice Lords)
- Black Cat (Felicia Hardy)
- Black Cat (Linda Turner)
- Black Condor (John Trujillo)
- Black Condor (Richard Grey)
- Black Flame
- Black Flash
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- Black Light
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- Black Lightning (Justice Lords)
- Black Mace
- Black Manta
- Black Marvel
- Black Mask
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- Black Orchid
- Black Owl
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- Black Racer
- Black Siren
- Black Spider
- Black Terror
- Black Vulcan
- Black Vulcan 2
- Black Widow (Batman 66)
- Black Widow (Natasha Romanov)
- Black Widow / Claire Voyant
- Black Zero
- Blackfire
- Blackguard
- Blackhawk
- Blackjack
- Blacklash / Whiplash (Mark Scarlotti)
- Blade
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- Bleez
- Blight (Derek Powers)
- Blink
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- Blizzard (DC)
- Blizzard (Marvel)
- Blockade Boy
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- Bloodsport (Alex Trent)
- Bloodsport (Robert DuBois)
- Bloodwynd
- Bloody Mary
- Blue Beetle (Dan Garrett)
- Blue Beetle (Jaime Reyes)
- Blue Beetle (Ted Kord)
- Blue Blade
- Blue Blaze
- Blue Bolt
- Blue Bulleteer / Nightveil
- Blue Devil
- Blue Falcon
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