The following categories exist on the wiki, and may or may not be unused. Also see wanted categories.
- 1970 Mecha series (13 members)
- 1980 Mecha series (24 members)
- 1980s releases (13 members)
- 1990 Mecha series (7 members)
- 1990s releases (22 members)
- 2000 Mecha series (16 members)
- 2000s releases (7 members)
- 2010s releases (13 members)
- 2020s releases (5 members)
- AMAIM (4 members)
- American Media (3 members)
- Anime (66 members)
- Appleseed (1 member)
- Armored Core (4 members)
- Article management templates (3 members)
- Article stubs (119 members)
- Assault BattleMechs (1 member)
- BattleMechs (10 members)
- BattleTech (9 members)
- Biomechs (3 members)
- BlogListingPage (0 members)
- Blog posts (10 members)
- Browse (21 members)
- CC-BY-SA files (0 members)
- CC-BY files (0 members)
- CC-SA files (0 members)
- Cancelled Series (1 member)
- Candidates for deletion (0 members)
- Captain Earth (1 member)
- Cartoons (2 members)
- Category templates (1 member)
- Character Songs (1 member)
- Chinese Media (1 member)
- Code Geass (1 member)
- Community (6 members)
- Conditional copyrighted free use files (0 members)
- Content (5 members)
- Copyright (5 members)
- Copyright tags (11 members)
- Copyrighted free use files (1 member)
- Crossovers (3 members)
- Cyborgs (1 member)
- Daemon X Machina (1 member)
- Dangaioh Series (2 members)
- Documentation templates (1 member)
- Ending Themes (5 members)
- Evangelion (4 members)
- Events (1 member)
- Fair use files (31 members)
- Fang of Sun Dougram (1 member)