The following categories exist on the wiki, and may or may not be unused. Also see wanted categories.
- Administration of this site (4 members)
- Antagonists (22 members)
- Article management templates (1 member)
- Article stubs (71 members)
- Articles lacking sufficient references (2 members)
- Badges (10 members)
- Black Hand (5 members)
- BlogListingPage (0 members)
- Blog posts (100 members)
- Browse (1 member)
- Businesses (25 members)
- CC-BY-SA files (0 members)
- CC-BY files (2 members)
- CC-SA files (0 members)
- Campaigns (6 members)
- Candidates for deletion (1 member)
- Charactder images (4 members)
- Character images (32 members)
- Characters (6 members)
- Characters by game (6 members)
- Characters by gender (2 members)
- Class images (8 members)
- Cold War (0 members)
- Collectibles (3 members)
- Colonies (6 members)
- Community (2 members)
- Companies (0 members)
- Concept Art (5 members)
- Concept art (0 members)
- Conditional copyrighted free use files (0 members)
- Conflicts (7 members)
- Content (17 members)
- Copyright (3 members)
- Copyright tags (8 members)
- Copyrighted free use files (1 member)
- Creatures (3 members)
- DLC (2 members)
- Defense contractors (10 members)
- Developers (2 members)
- Disambiguation pages (7 members)
- Drones (11 members)
- Enemies (7 members)
- Enemy images (16 members)
- Explosives (10 members)
- Fair use files (0 members)
- Female characters (9 members)
- Files requiring attribution (0 members)
- Files with unknown copyright status (8 members)
- Formatting templates (3 members)
- Forum templates (12 members)