The following categories exist on the wiki, and may or may not be unused. Also see wanted categories.
- Animations (17 members)
- Anime (2 members)
- Another Dark (2 members)
- Another Dark Kagura (115 members)
- Another Dark Mai (134 members)
- Apocalypse (2 members)
- Apostles (3 members)
- April Fools' 2017 (8 members)
- April Fools' 2018 (25 members)
- April Fools' 2022 (1 member)
- Arakune (730 members)
- Aramasa (31 members)
- Arcade Controller (2 members)
- Arcade Mode (482 members)
- Architects of Sin (2 members)
- Arcus Diabolus: Bolverk (31 members)
- Area.28 (14 members)
- Arima, Nanasuke (57 members)
- Arma Reboare: Muchourin (15 members)
- Ars Armegis (3 members)