The following categories exist on the wiki, and may or may not be unused. Also see wanted categories.
- ADA Ninjaz Wiki (5 members)
- Aramar Clan (19 members)
- Atsuko Clan (9 members)
- Blog posts (0 members)
- Books (1 member)
- Candidates for deletion (0 members)
- Characters (37 members)
- Cities (9 members)
- Clan Wars (3 members)
- Clans of Ninava (3 members)
- Community (2 members)
- Daisuke Clan (7 members)
- Disambiguations (0 members)
- Documentation templates (1 member)
- Events (5 members)
- Game (1 member)
- General wiki templates (9 members)
- Hatnote templates with errors (0 members)
- Image license templates (12 members)
- Images (4 members)
- Infobox templates (13 members)
- Items (5 members)
- Locations (13 members)
- Lore (2 members)
- Maintenance (6 members)
- Media (2 members)
- Navbox templates (1 member)
- Notice templates (10 members)
- Official Fan Lore (3 members)
- Pages with broken file links (0 members)
- Provinces (1 member)
- Quote templates (2 members)
- Screenshots (0 members)
- Spanish Military (2 members)
- Spirit Guardian (1 member)
- Stubs (0 members)
- Template documentation (44 members)
- Templates (9 members)
- Unattributed files (0 members)
- Videos (0 members)
- Wiki skin images (2 members)