The following categories exist on the wiki, and may or may not be unused. Also see wanted categories.
- 100th Episodes (3 members)
- Actors (1 member)
- Agender Characters (1 member)
- Airports (1 member)
- Alleyways (1 member)
- Alternate Realities (1 member)
- Amazons (5 members)
- Angels (2 members)
- Archais (1 member)
- Archers (11 members)
- Arcs (31 members)
- Arrow (5 members)
- Arrow (Comic Series) (3 members)
- Arrow Characters (111 members)
- Arrow Episodes (37 members)
- Arrow Seasons (16 members)
- Arrow Soundtracks (4 members)
- Arrowverse (35 members)
- Article Stubs (648 members)
- Articles with Conjectural Titles (126 members)
- Articles with Too Few Links (0 members)
- Artificial Intelligences (7 members)
- Artists (2 members)
- Asgardians (1 member)
- Assassins (12 members)
- Assistants (11 members)
- Athletes (15 members)
- Atlanteans (3 members)
- Authors (5 members)
- Avenues (1 member)
- Baristas (2 members)
- Bartenders (5 members)
- Base of Operations (34 members)
- Batman: Classic TV Series (9 members)
- Batman: Classic TV Series Characters (19 members)
- Batman: Classic TV Series Episodes (2 members)
- Batman: Classic TV Series Seasons (3 members)
- Batman: Classic TV Series Shorts (1 member)
- Batman: The Motion Picture Anthology (2 members)
- Batman: The Motion Picture Anthology Characters (3 members)
- Batman '66 Meets Wonder Woman '77 (1 member)
- Batwoman (3 members)
- Batwoman Characters (77 members)
- Batwoman Episodes (41 members)
- Batwoman Seasons (6 members)
- Behind the Scenes (102 members)
- Beverages (2 members)
- Birds of Prey (3 members)
- Birds of Prey Characters (1 member)
- Birds of Prey Episodes (1 member)