The following categories exist on the wiki, and may or may not be unused. Also see wanted categories.
- Alive (45 members)
- Anime (14 members)
- Article Management Templates (1 member)
- Blog posts (13 members)
- Browse (20 members)
- CCC (12 members)
- Candidates for deletion (0 members)
- Chapters (82 members)
- Characters (72 members)
- Code Templates (1 member)
- Community (1 member)
- Deceased (13 members)
- Devils (15 members)
- Disambiguations (1 member)
- Episodes (13 members)
- F Squad (5 members)
- Factions (3 members)
- Female Characters (26 members)
- Guidelines (1 member)
- Help (2 members)
- Hidden categories (2 members)
- Humans (41 members)
- Hybrids (3 members)
- Images (1 member)
- Keio University (4 members)
- Locations (2 members)
- Male Characters (34 members)
- Manga (99 members)
- Music (2 members)
- ONL (7 members)
- Organizations (1 member)
- Pages with broken file links (3 members)
- Races (2 members)
- Remplates (1 member)
- Site administration (1 member)
- Stubs (70 members)
- Template documentation (28 members)
- Templates (61 members)
- Terminologies (6 members)
- Videos (4 members)
- Volumes (14 members)