The following categories exist on the wiki, and may or may not be unused. Also see wanted categories.
- Disbanded (4 members)
- Diseases (BZPRPG) (1 member)
- Drawings (1 member)
- Earth Elementals (7 members)
- Earth Elementals (ACD) (1 member)
- Earth Elementals (BZPRPG) (1 member)
- Earth Elementals (BZPRPG III) (8 members)
- Earth Elementals (NBZPRPG) (1 member)
- Earth Elementals (The Gate) (1 member)
- Electricity, Plasma and Sonics Elementals (BZPRPG) (1 member)
- Electricity/Lightning Elementals (Bionicle Kingdoms I-IV) (1 member)
- Electricity Elementals (BZPRPG) (1 member)
- Electricity Elementals (BZPRPG I) (2 members)
- Elemental (BZPRPG I) (1 member)
- Elementals (BZPRPG) (2 members)
- Elements (10 members)
- Elements (BZPRPG I) (1 member)
- Elements (BZPRPG III) (13 members)
- Equipments (BZPRPG III) (1 member)
- Events (25 members)