The following categories exist on the wiki, and may or may not be unused. Also see wanted categories.
- 20th Century Fox (0 members)
- 20th Century Studios (2 members)
- 30th Century Fox (1 member)
- 4-part episodes (4 members)
- Action-themed episodes (1 member)
- Actors (82 members)
- Administration (1 member)
- Adventurers (1 member)
- Advertisements (4 members)
- Aliases (17 members)
- Aliens (195 members)
- Alive characters (555 members)
- All My Circuits (7 members)
- Allusions (1 member)
- Alternate Universe Characters (14 members)
- Amazonians (4 members)
- Amphibiosan (10 members)
- Amy Episodes (21 members)
- Animals (60 members)
- Antagonists (125 members)
- Anthology Episodes (7 members)
- Anthology comic books (4 members)
- Anti-Heroes (7 members)
- Appearances (151 members)
- Article management templates (3 members)
- Articles Needing New Images (1 member)
- Articles Without Images (11 members)
- Articles in need of a re-write (11 members)
- Articles in need of appearances (2 members)
- Articles in need of citation (2 members)
- Articles with conjectural titles (12 members)
- Artists (28 members)
- Atomic Supermen (6 members)
- Beelzebot Episodes (4 members)
- Bender's Family (38 members)
- Bender's Love Interests (9 members)
- Bender Episodes (81 members)
- Bender Units (7 members)
- Blernsball Players (5 members)
- Blobs (7 members)
- BlogListingPage (2 members)
- Blog posts (43 members)
- Books (4 members)
- Browse (7 members)
- Buggalo (2 members)
- Buildings (69 members)
- Bureaucrats (10 members)
- Calculation templates (5 members)
- Calculon Episodes (8 members)
- Cameos (2 members)