The following categories exist on the wiki, and may or may not be unused. Also see wanted categories.
- Rahi (BZPRPG I) (1 member)
- Rahi Hunters (2 members)
- Rahi Tender (1 member)
- Rahkshi (AHC) (1 member)
- Rahkshi (AMG) (1 member)
- Rahkshi (A Hollow Cry) (1 member)
- Rahkshi (BZPRPG III) (1 member)
- Rahkshi of Hunger (Bionicle Kingdoms I-IV) (1 member)
- Rare (BZPRPG III) (1 member)
- Recurring Characters (7 members)
- Recurring Groups (1 member)
- Red Star Voyagers (5 members)
- Regions (5 members)
- Regions (BZPRPG III) (5 members)
- Regions (Bara Magna (Series)) (2 members)
- Requires Approval Characters (BZPRPG III) (1 member)
- Retired Characters (BZPRPG III) (1 member)
- Robot (Bionicle Kingdoms III-IV) (1 member)
- Rock Tribe (2 members)
- Role-Playing Games (20 members)
- Rora (2 members)
- Routes (BZPRPG III) (1 member)
- Sado (BZPRPG III) (1 member)
- Sand Toa (1 member)
- Santun (BZPRPG) (2 members)
- Sentinels (7 members)
- Settlements (13 members)
- Settlements (BZPRPG III) (5 members)
- Settlements (Bara Magna (Series)) (9 members)
- Shadow-Fire Elementals (BZPRPG) (1 member)
- Shadow/Ice/Fire Elementals (BZPRPG) (1 member)
- ShadowWalker Order (1 member)
- Shadow (BZPRPG) (2 members)
- Shadow Elementals (BZPRPG) (1 member)
- Shadow Elementals (BZPRPG I) (1 member)
- Shadow Elementals (BZPRPG III) (1 member)
- Shadow Elementals (BZRPG) (1 member)
- Shadow Elementals (Bionicle Kingdoms IV) (1 member)
- Shadow Elementals (OE) (1 member)
- Shadow Elementals (The Gate) (1 member)
- Shardling (BZPRPG) (2 members)
- She is capable of using any element but only with a small amount of power. Elementals (BZPRPG I) (1 member)
- Ships (5 members)
- Shop Owner (4 members)
- Sighteyes (4 members)
- Six Kingdoms (1 member)
- Six Kingdoms: Apocalypse (1 member)
- Six Kingdoms: Escapement (1 member)
- Six Kingdoms: Rebirth (1 member)
- Six Kingdoms (Series) (10 members)