The following categories exist on the wiki, and may or may not be unused. Also see wanted categories.
- Article management templates (4 members)
- Article stubs (27 members)
- BlogListingPage (0 members)
- Blog posts (0 members)
- Browse (3 members)
- Candidates for deletion (4 members)
- Candidates for speedy deletion (0 members)
- Category templates (4 members)
- Characters (3 members)
- Community (6 members)
- Content (1 member)
- Copyright (0 members)
- Corrector Yui (7 members)
- Disambiguations (0 members)
- Episodes (25 members)
- Female characters (0 members)
- Files (1 member)
- Forums (6 members)
- General wiki templates (33 members)
- Haruna Kisaragi (1 member)
- Help (5 members)
- Help desk (2 members)
- Hidden categories (2 members)
- Human Correctors (2 members)
- Humans (2 members)
- Image wiki templates (9 members)
- Images (7 members)
- Infobox templates (8 members)
- Main Page Templates (1 member)
- Multilingual support templates (1 member)
- Navigational templates (2 members)
- New pages (0 members)
- Organisation (0 members)
- Organization (8 members)
- Pages proposed for deletion (0 members)
- Pages with broken file links (3 members)
- Policy (2 members)
- Season 1 Episodes (24 members)
- Season 2 Episodes (1 member)
- Site administration (4 members)
- Site maintenance (4 members)
- Template documentation (64 members)
- Templates (49 members)
- Templates using ParserFunctions (1 member)
- Watercooler (2 members)
- Yui Kasuga (1 member)