The following categories exist on the wiki, and may or may not be unused. Also see wanted categories.
- 2018 (16 members)
- Adventures of Super Luigi (2 members)
- Aired Episodes (15 members)
- Albums (2 members)
- Blog posts (0 members)
- Books (2 members)
- Browse (7 members)
- Candidates for deletion (0 members)
- Cast Members (6 members)
- Characters (59 members)
- Contests (1 member)
- Disambiguations (0 members)
- Episodes (17 members)
- Events (2 members)
- Galleries (17 members)
- Help (0 members)
- Images (2 members)
- Items (2 members)
- Locations (3 members)
- Main Character (2 members)
- Minisodes (4 members)
- Quests (2 members)
- Season 1 Episodes (15 members)
- Season Premieres (1 member)
- Seasons (2 members)
- Songs (3 members)
- Specials (1 member)
- Squad Members (7 members)
- Template documentation (26 members)
- Templates (27 members)
- Templates/Infobox (8 members)
- Templates/Navbox (1 member)
- Templates/Quote (1 member)