The following categories exist on the wiki, and may or may not be unused. Also see wanted categories.
- A (2 members)
- A Certain Magical Index: Imaginary Fest (14 members)
- Abilities (3 members)
- Abilities & gear (239 members)
- Adventurers (26 members)
- An Ancient Demon Lord Appeared (5 members)
- Analytical skills (18 members)
- Angels (61 members)
- Angels of Origin (8 members)
- Anime Images (3,489 members)
- Anime Original Characters (6 members)
- Anime episodes (103 members)
- Arch Daemons (0 members)
- Archdaemons (15 members)
- Archdragons (31 members)
- Articles needing citations (8 members)
- Articles needing cleanup (17 members)
- Articles needing expansion (278 members)
- Articles needing images (0 members)
- Arts (9 members)
- Aspectual magic (34 members)
- Battlewill (38 members)
- Beastmen (65 members)
- Birth of the Slime Demon Lord (3 members)
- Black Colored Daemons (4 members)
- Blu-ray Releases (23 members)
- Blue Colored Daemons (2 members)
- Blumund (8 members)
- Breath (9 members)
- Browse (10 members)
- Calamity (3 members)
- Candidates for deletion (89 members)
- Catastrophe (59 members)
- Catastrophe in Jura Forest (6 members)
- Chaos (25 members)
- Chapter 73 (3 members)
- Chapter 74 (4 members)
- Chapters (0 members)
- Character Galleries (162 members)
- Characters (446 members)
- Characters by species (66 members)
- Chinese (3 members)
- Chosen heroes (9 members)
- Clayman Revenge (12 members)
- Clayman Revenge Chapters (3 members)
- Clayman Revenge Volumes (6 members)
- Collaboration Images (274 members)
- Collaborations (39 members)
- Common Skills (0 members)
- Common skills (20 members)