The following categories exist on the wiki, and may or may not be unused. Also see wanted categories.
- Angels (8 members)
- Animated series (1 member)
- Article management templates (4 members)
- Article stubs (0 members)
- BlogListingPage (0 members)
- Blog posts (0 members)
- Browse (5 members)
- Candidates for deletion (0 members)
- Candidates for speedy deletion (0 members)
- Category templates (3 members)
- Characters (11 members)
- Community (6 members)
- Content (2 members)
- Copyright (0 members)
- Disambiguations (0 members)
- Earthian (3 members)
- Earthian Manga (1 member)
- Files (2 members)
- Forums (6 members)
- General wiki templates (34 members)
- Help (6 members)
- Help desk (2 members)
- Hidden categories (2 members)
- Humans (2 members)
- Image wiki templates (9 members)
- Images (4 members)
- Infobox templates (9 members)
- Locations (2 members)
- Manga (1 member)
- New pages (0 members)
- Organisation (0 members)
- Organization (9 members)
- Pages proposed for deletion (0 members)
- Pages with broken file links (1 member)
- Policy (2 members)
- Site administration (4 members)
- Site maintenance (5 members)
- Template documentation (61 members)
- Templates (14 members)
- Terms (1 member)
- Videos (0 members)
- Volumes (1 member)
- Watercooler (2 members)