The following categories exist on the wiki, and may or may not be unused. Also see wanted categories.
- Criminals (1 member)
- Crystal Elementals (3 members)
- Crystal Elementals (BZPRPG III) (4 members)
- Cultured Gentry (2 members)
- Custom Elementals (BZPRPG I) (1 member)
- Custom Kanohi (1 member)
- Custom Kanohi (BZPRPG III) (1 member)
- Custom Species (1 member)
- Custom Species (BZPRPG I) (1 member)
- Custom Species (NBZP) (2 members)
- Custom Tech (BZPRPG III) (1 member)
- Cyborganic Toa (BZPRPG) (1 member)
- Dark Toa (11 members)
- Dark Toa (BZPRPG III) (1 member)
- Darkness Elementals (A Hollow Cry) (1 member)
- Dasaka (30 members)
- Dasaka (BZPRPG III) (3 members)
- Dashi (2 members)
- Datsue (3 members)
- De-Matoran (1 member)