Some members of the "animal mafia"
Actually each name is a pun in japanese, mixing "yakuza" with an animal.
・Yakuzai = Yakuza + Rhino
・Yakuzou = Yakuza + elephant
・Yakuzaru = Yakuza + Monkey
・Yakuzai = Yakuza + Rhino
・Yakuzou = Yakuza + elephant
・Yakuzaru = Yakuza + Monkey