Character Name
3-D Man
A.I.M.
Aaron Stack
A-Bomb (HAS)
Abomination (Emil Blonsky)
Abomination (Ultimate)
Absorbing Man
Abyss
Abyss (Age of Apocalypse)
Adam Destine
Adam Warlock
Aegis (Trey Rollins)
Agent Brand
Agent X (Nijo)
Agent Zero
Agents of Atlas
Aginar
Air-Walker (Gabriel Lan)
Ajak
Ajaxis