The following categories exist on the wiki, and may or may not be unused. Also see wanted categories.
- Actors (184 members)
- Aliens (12 members)
- Allusions to the comics (185 members)
- Amazons (6 members)
- Animals (2 members)
- Arkham Asylum inmates (5 members)
- Article management templates (3 members)
- Article stubs (45 members)
- Atlanteans (3 members)
- Blog posts (6 members)
- Broken S link (2 members)
- Browse (8 members)
- Businesses (19 members)
- Candidates for deletion (22 members)
- Characters (243 members)
- Cities (33 members)
- Companies (3 members)
- Companies (real world) (4 members)
- Concept artwork (13 members)
- Concepts (2 members)
- Content (11 members)
- Countries (6 members)
- Crew (150 members)
- Cyborgs (2 members)
- Deceased (66 members)
- Deceased characters (0 members)
- Demons (4 members)
- Disambiguations (3 members)
- Doctors (8 members)
- Elves (2 members)
- Episodes (50 members)
- General wiki templates (2 members)
- Groups (18 members)
- Help (0 members)
- Heroes (15 members)
- Humans (143 members)
- Images (7 members)
- Images at Agnews Asylum (1 member)
- Images by character (78 members)
- Images by episode (43 members)
- Images from 51% (8 members)
- Images from Aqualad (13 members)
- Images from Asylum (12 members)
- Images from Atonement (1 member)
- Images from Barbara Gordon (19 members)
- Images from Blackfire (1 member)
- Images from Brother Blood (12 members)
- Images from Bruce Wayne (2 members)
- Images from Conner (13 members)
- Images from Deathstroke (2 members)