The following categories exist on the wiki, and may or may not be unused. Also see wanted categories.
- Actors (87 members)
- Article management templates (3 members)
- Article stubs (0 members)
- BlogListingPage (0 members)
- Blog posts (1 member)
- Browse (4 members)
- Candidates for deletion (0 members)
- Category templates (3 members)
- Characters (217 members)
- Community (3 members)
- Content (1 member)
- Copyright (0 members)
- Crew (7 members)
- Disambiguations (0 members)
- Episodes (21 members)
- Fanfic (14 members)
- Forums (6 members)
- General wiki templates (20 members)
- Help (6 members)
- Help desk (2 members)
- Hidden categories (2 members)
- Image wiki templates (11 members)
- Images (1 member)
- Locations (35 members)
- Merchandise (8 members)
- Music (26 members)
- Organisation (8 members)
- Pages with broken file links (0 members)
- Policy (2 members)
- Production (13 members)
- Site administration (2 members)
- Site maintenance (3 members)
- Slang terms (6 members)
- Templates (5 members)
- Three Baseball Players (1 member)
- Unseen Characters (67 members)
- Videos (4 members)
- Watercooler (2 members)