The following categories exist on the wiki, and may or may not be unused. Also see wanted categories.
- African Characters (1 member)
- Aliens (3 members)
- Alligators (1 member)
- Americans (1 member)
- Animals (45 members)
- Antagonists (0 members)
- Anti-Heroes (0 members)
- Anti-Villains (0 members)
- Article management templates (5 members)
- Article stubs (1 member)
- Athletes (1 member)
- Birds (12 members)
- Blobs (5 members)
- BlogListingPage (0 members)
- Blog posts (1 member)
- Books (1 member)
- Brands (3 members)
- Browse (8 members)
- Candidates for deletion (69 members)
- Candidates for speedy deletion (0 members)
- Category templates (4 members)
- Cats (1 member)
- Characters (15 members)
- Characters From Books (1 member)
- Characters In Books (1 member)
- Characters by Media (4 members)
- Characters from books (1 member)
- Characters in Books (1 member)
- Characters in Commercials (1 member)
- Characters in Flushed Away (56 members)
- Characters in Flushed Away: The Animated Series (0 members)
- Characters in Flushed Away: The Video Game (17 members)
- Characters in Short Films (14 members)
- Characters in books (5 members)
- Characters with Blue Eyes (1 member)
- Characters with Green Eyes (1 member)
- Children (6 members)
- Citations needed (0 members)
- Cities (2 members)
- Clams (1 member)
- Commercial Characters (21 members)
- Commercials (1 member)
- Community (5 members)
- Companies (11 members)
- Content (2 members)
- Cool Guys (0 members)
- Copyright (0 members)
- Countries (1 member)
- Creators (1 member)
- Creatures (6 members)