The following categories exist on the wiki, and may or may not be unused. Also see wanted categories.
- Makutaspawn (4 members)
- Male Characters (13 members)
- Male Characters ((NBZP)) (1 member)
- Male Characters (BZPIII) (1 member)
- Male Characters (BZPRPG) (9 members)
- Male Characters (BZPRPGIII) (1 member)
- Male Characters (BZPRPG I) (3 members)
- Male Characters (BZPRPG III) (51 members)
- Male Characters (BZRPG) (2 members)
- Male Characters (Bara Magna (Series)) (13 members)
- Male Characters (Bionicle Kingdoms IV) (2 members)
- Male Characters (NBZP) (12 members)
- Male Characters (NBZRPG) (1 member)
- Male Characters (New BZPRPG) (6 members)
- Male Characters (The Academy) (2 members)
- Male Dasaka (6 members)
- Maps (1 member)
- Marines (17 members)
- Marines (BZPRPG III) (1 member)
- Mark Bearers (11 members)
- Masculine Characters (NBZP) (1 member)
- Mata Nui (BZPRPG III) (8 members)
- Mata Nui (Island) (1 member)
- Mata Nui (Island) (BZPRPG III) (6 members)
- Matoran (86 members)
- Matoran (BK) (1 member)
- Matoran (BZPRPG) (18 members)
- Matoran (BZPRPG I) (2 members)
- Matoran (BZPRPG III) (40 members)
- Matoran (NBZP) (13 members)
- Matoran (Shut) (1 member)
- Memory Elementals (BZPRPG I) (1 member)
- Menti (6 members)
- Menti (BZPRPG III) (2 members)
- Mercenaries (48 members)
- Mercenaries (BZPRPG III) (4 members)
- Mercenary Organizations (1 member)
- Mercenary Organizations (BZPRPG III) (1 member)
- Merfolk (2 members)
- Military Personnel (Six Kingdoms) (1 member)
- Militarys (BZPRPG III) (1 member)
- Mindarms (10 members)
- Miners (4 members)
- Multiple (explained in detail more later) Elementals (BZPRPG I) (1 member)
- Murders (2 members)
- Murders (BZPRPG III) (1 member)
- Musicians (13 members)
- Mutan Matoran (BZPRPG) (1 member)
- Mutant Toa/Kikanalo Fusion (The Gate) (1 member)
- Mutant Toa (AMG) (1 member)