The following categories exist on the wiki, and may or may not be unused. Also see wanted categories.
- 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)
- Ars Armegis Wielders (4 members)
- Artificial Causality Phenomenon Weapon (7 members)
- Artificial Humans (12 members)
- Arts (7 members)
- Asano (0 members)
- Asano, Kenta (7 members)
- Asphyxia (13 members)
- Audio (13,511 members)
- Automations (5 members)
- Avenge (158 members)
- Ayame Yayoi (3 members)
- Azrael (449 members)
- Azure (21 members)
- Azure Shrine Maiden (2 members)
- BBDW Character (65 members)
- BBDW Event (46 members)
- BBDW Grimoire (161 members)
- BBDW Sprite (33 members)
- BLUE (3 members)
- Babel (6 members)
- Backgrounds (200 members)
- Backstage (6 members)
- Bang Shishigami (730 members)
- Bascule (11 members)
- Battle (109 members)
- Battle Cards Characters (9 members)
- Battle x Puzzle Characters (8 members)
- Beastkin (3 members)
- Bell (9 members)
- Birthday Art (284 members)
- Black Beast (23 members)