The following categories exist on the wiki, and may or may not be unused. Also see wanted categories.
- 10th century individuals (7 members)
- 19th century individuals (9 members)
- 2-D Man images (5 members)
- 30th century individuals (2 members)
- 6th century individuals (6 members)
- A.J. McLean images (1 member)
- A Better World images (31 members)
- A Bullet For Bullock images (8 members)
- A Cat in the Hand images (9 members)
- A Fish Story images (7 members)
- A Knight of Shadows images (13 members)
- A League of Their Own images (76 members)
- A Little Night Magic images (4 members)
- A Little Piece of Home images (16 members)
- A Touch of Curaré images (12 members)
- A to Z (3,840 members)
- Aaron Herbst images (4 members)
- Abandoned Gas Station of Solitude images (1 member)
- Abel Cuvier images (5 members)
- Absolute Power images (8 members)
- Absolute Zero images (4 members)
- Ace (dog) images (8 members)
- Ace (metahuman) images (1 member)
- Ace (robot) images (3 members)
- Ace in the Hole images (10 members)
- Action Figures images (14 members)
- Actors (19 members)
- Adam Heat images (11 members)
- Adam Stepnik images (1 member)
- Adbot images (2 members)
- Aftershock images (8 members)
- Agent Lee images (9 members)
- Agent Rush images (4 members)
- Agent West images (19 members)
- Agrichem images (1 member)
- Aircraft (12 members)
- Albert images (1 member)
- Alice images (3 members)
- Aliens (91 members)
- Alive! images (20 members)
- Almeracians (4 members)
- Almost Got 'Im images (14 members)
- Alternate dimension (9 members)
- Alternate dimensions (5 members)
- Alternate universe (25 members)
- Alva Industries images (1 member)
- Amanda Waller images (7 members)
- Amazo images (13 members)
- Amazons (7 members)
- Amy (Pryce's girlfriend) images (1 member)