The following categories exist on the wiki, and may or may not be unused. Also see wanted categories.
- Adults (1 member)
- Birds (1 member)
- Blog posts (2 members)
- Browse (8 members)
- Candidates for deletion (7 members)
- Characters (13 members)
- Disambiguations (0 members)
- Ducks (1 member)
- Episodes (17 members)
- Females (6 members)
- Forums (6 members)
- Galleries (1 member)
- Help (3 members)
- Help desk (2 members)
- Images (0 members)
- Lists (1 member)
- Males (8 members)
- Mimiloo Friends (9 members)
- Objects (1 member)
- Season 1 (13 members)
- Season 2 (1 member)
- Template documentation (28 members)
- Templates (29 members)
- Toys (1 member)
- Videos (5 members)
- Watercooler (2 members)
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