The following categories exist on the wiki, and may or may not be unused. Also see wanted categories.
- 21st F.I.S.T. (Fleet Initial Strike Team) (0 members)
- Ages (3 members)
- Animal (1 member)
- Army (38 members)
- Article management templates (4 members)
- Article stubs (3 members)
- Blockmen (2 members)
- Browse (4 members)
- Candidates for deletion (2 members)
- Candidates for speedy deletion (0 members)
- Category templates (4 members)
- Classic (1 member)
- Community (5 members)
- Content (1 member)
- Copyright (0 members)
- Disambiguations (0 members)
- Files (2 members)
- Forums (5 members)
- Future (11 members)
- General wiki templates (30 members)
- Goblinoid (1 member)
- Help (4 members)
- Help desk (2 members)
- Hidden categories (1 member)
- Humanoid (6 members)
- Image wiki templates (9 members)
- Images (7 members)
- Infection (1 member)
- Infobox templates (8 members)
- Match Types (6 members)
- Mechanical (3 members)
- Medieval (4 members)
- Metal Chao (1 member)
- Organisation (0 members)
- Organization (8 members)
- Pages proposed for deletion (0 members)
- Pages with broken file links (0 members)
- Policy (2 members)
- Site administration (4 members)
- Site maintenance (4 members)
- Species (8 members)
- Template documentation (58 members)
- Templates (7 members)
- Videos (1 member)
- Watercooler (2 members)