The following categories exist on the wiki, and may or may not be unused. Also see wanted categories.
- 'Twas the Night Before Mech Strike Images (1 member)
- 7 Little Superheroes Images (5 members)
- 99 Hulk Balloons Images (1 member)
- A-Bomb (Hulk and the Agents of S.M.A.S.H.) Images (2 members)
- A-I-M 2 (Hulu Universe) (1 member)
- A-I-M 2 (Hulu Universe) Images (1 member)
- A.I.M. (7 members)
- A.I.M. (Hulu Universe) (2 members)
- A.I.M. (Hulu Universe) Images (2 members)
- A.I.M. (Iron Man: Armored Adventures) (1 member)
- A.I.M. (Marvel Super Heroes: What The--?!) (4 members)
- A.I.M. (The Avengers: Earth's Mightiest Heroes) (3 members)
- A.I.M. (The Marvel Super Heroes) (3 members)
- A.I.M. Images (2 members)
- A Crime in Time Images (3 members)
- A Day Unlike Any Other Images (1 member)
- A Deadly Dream Images (2 members)
- A Firestar Is Born Images (11 members)
- A New Sun Must Rise Images (1 member)
- A Rogue's Tale Images (86 members)
- A Very Merry Spidey Day Images (1 member)
- A Very Spidey Christmas (6 members)
- Aaron Davis (Sony Universe) Images (3 members)
- Aaron Warren (The Spectacular Spider-Man) Images (3 members)
- Abigail Brand (The Avengers: Earth's Mightiest Heroes) Images (1 member)
- Abomination (The Avengers: Earth's Mightiest Heroes) Images (1 member)
- Abomination Images (22 members)
- Abraham Erskine (The Avengers: Earth's Mightiest Heroes) Images (1 member)
- Abraham Van Helsing (Dracula: Sovereign of the Damned) Images (5 members)
- Absolute Carnage, Part 2 Images (1 member)
- Absolute Carnage: Marvel Ultimate Comics (9 members)
- Absolute Carnage: Marvel Ultimate Comics (Short) Media (1 member)
- Absorbing Man (The Avengers: Earth's Mightiest Heroes) Images (14 members)
- Absorbing Man Images (4 members)
- Acid Images (2 members)
- Acolytes (11 members)
- Acolytes (Wolverine and the X-Men) (14 members)
- Acolytes (Wolverine and the X-Men) Images (2 members)
- Acolytes (X-Men: Evolution) (9 members)
- Acolytes (X-Men: Evolution) Images (6 members)
- Acolytes Images (4 members)
- Acts of Vengeance Images (1 member)
- Adam Warlock (Funko Universe) Images (1 member)
- Adam Warlock (The Avengers: Earth's Mightiest Heroes) Images (22 members)
- Adam Warlock Images (2 members)
- Adamantium Images (3 members)
- Adrian Toomes (The Spectacular Spider-Man) Images (2 members)
- Adrian Toomes Images (1 member)
- Adventures of the X-Men (3 members)
- Africans (Wolverine and the X-Men) Images (5 members)