Bio: He was a caveman from a tribe known as the Hill-Dwellers, a skilled hunter, who sought to find foes worthy of him, having long since tired of battling sabretooths.
Raa had what appeared to be a fragment of the Bloodgem embedded in his chest (in Avengers Annual#22/2, the Bloodgem fragment was incorrectly depicted as hanging from his bone necklace), which would presumably grant him the same enhanced strength and toughness, healing powers and immortality as it did Ulysses Bloodstone himself. Raa carried a spear, and whilst training, once carried an advanced laser pistol of some kind.