The following categories exist on the wiki, and may or may not be unused. Also see wanted categories.
- 2015 (1 member)
- Adam Ruins Everything (5 members)
- Article management templates (1 member)
- Article stubs (360 members)
- Blog posts (1 member)
- Browse (9 members)
- Candidates for deletion (14 members)
- Cast (219 members)
- Characters (2 members)
- Companies (3 members)
- DVDs (1 member)
- Disambiguations (0 members)
- Episodes (65 members)
- Episodes that dealt with serious issues (3 members)
- Experts (126 members)
- Female cast (2 members)
- Guest (40 members)
- Guests (110 members)
- Help (0 members)
- Images (216 members)
- Iyan.wikia.com (1 member)
- Main Stars (7 members)
- Network (0 members)
- Pages with broken file links (1 member)
- Recurring cast (1 member)
- Season 1 (28 members)
- Season 2 (26 members)
- Season 3 (14 members)
- Seasons (4 members)
- TV Network (1 member)
- Template documentation (29 members)
- Templates (29 members)
- Upcoming (3 members)
- Videos (83 members)
- Writers (3 members)