Krantz (クランツ Kurantsu): BullBlack's deceased younger brother, who was mudered by Captain Zahab. BullBlack had sworn to avenge him at any cost, even if it meant sacrificing innocent people. When BullBlack attempted to trigger the planet's core to self destuct, destroying the Balaban along with the entire Earth, Krantz's spirit appeared before him and convinced him to let go of his hate and vengeance. After BullBlack sacrificed himself to neutralize the explosion, their spirits were reunited in the afterlife, giving BullBlack peace while Hyuuga took up his mantle and powers in defense of Earth.