The following categories exist on the wiki, and may or may not be unused. Also see wanted categories.
- 1940 Character Debuts (1 member)
- 1940s Character Debuts (0 members)
- 1942 Character Debuts (1 member)
- 1948 Character Debuts (1 member)
- 1959 Character Debuts (1 member)
- 1961 Character Debuts (1 member)
- 1966 Character Debuts (1 member)
- 1991 Character Debuts (1 member)
- A Death in the Family (2 members)
- A Flip of the Coin (1 member)
- A Lonely Place of Dying (3 members)
- Abandoned Locations (1 member)
- Activity Books (3 members)
- Actors (8 members)
- Actors by character (15 members)
- Actors by film (10 members)
- Actors who played Batman but not Bruce Wayne (1 member)
- Actors who played Bruce Wayne but not Batman (4 members)
- Administration of this site (5 members)
- Aircrafts (14 members)
- Al Ghul Family (12 members)
- Alant Grant/Creator (13 members)
- Alberto Falcone in Animation (1 member)
- Alfred actors (9 members)
- Alfred in Animation (12 members)
- Alfred in Live-Action (9 members)
- Alfred in Other Media (3 members)
- Alfred in Video Games (1 member)
- Alfred voice actors (19 members)
- Aliens (15 members)
- All-Star Western (Volume 3) (2 members)
- All-Star Western (Volume 3) Issues (35 members)
- All Star Batman and Robin the Boy Wonder (1 member)
- Allies (355 members)
- Amalgam Characters (5 members)
- Amanda Waller in Other Media (4 members)
- An Innocent Guy (2 members)
- Anarky in Animation (1 member)
- Anarky in Video Games (1 member)
- Animals (24 members)
- Animated Batmobiles (9 members)
- Animated Batsuits (1 member)
- Animated Characters (7 members)
- Animated Crossover Movies (19 members)
- Animated Crossover Shows (9 members)
- Animated Film Cast (5 members)
- Animated Film Characters (8 members)
- Animated Film Villains (1 member)
- Animated Films (44 members)
- Animated Shows (20 members)