The following categories exist on the wiki, and may or may not be unused. Also see wanted categories.
- A to Z (2,195 members)
- Abra Kadabra images (3 members)
- Adam Strange images (15 members)
- Agendas images (28 members)
- Airports (3 members)
- Alanna images (9 members)
- Alienated images (29 members)
- Aliens (75 members)
- All-Star Squadron (9 members)
- Alpha Male images (28 members)
- Amanda Waller images (3 members)
- Amazo images (4 members)
- Ambassador images (17 members)
- Animals (20 members)
- Animation studios (5 members)
- Another Freak images (14 members)
- Antisocial Pathologies images (9 members)
- Aquagirl images (9 members)
- Archers (6 members)
- Arion images (8 members)
- Arrow family (7 members)
- Arrowette images (6 members)
- Arsenal images (24 members)
- Artemis Through the Looking-Glass images (11 members)
- Article management templates (4 members)
- Article stubs (0 members)
- Articles needing citations (0 members)
- Articles needing expansion (2 members)
- Articles needing images (0 members)
- Articles without personality section (139 members)
- Articles without physical appearance section (119 members)
- Asami Koizumi images (15 members)
- Atlantean city-states (8 members)
- Atlanteans (41 members)
- Atom images (7 members)
- Atomic Skull images (4 members)
- Auld Acquaintance images (24 members)
- Away Mission images (24 members)
- B'arzz O'oomm images (11 members)
- Bane images (7 members)
- Banks (3 members)
- Banks images (3 members)
- Baron Bedlam images (5 members)
- Bat family (9 members)
- Batman images (58 members)
- Bear images (7 members)
- Beast Boy images (57 members)
- Before the Dawn images (22 members)
- Belle Reve Penitentiary (37 members)
- Beneath images (21 members)