(横浜ジョー, Yokohama Jō): User of "Undead Shinken" (Fist of the Undead). As a member of the "Neo Assassination Unit", he attacks Bo-bobo's team in the cemetery with Don Patch's "fighting ability". He doesn't really do anything himself. He rather leaves the fighting to his zombies. After Don Patch attacked Joe with his "god" bike license attack, Joe transformed into a zombie demon like form. He is ultimately defeated both by Bo-bobo's nosehairs, and Don Patch stealing a crocodile from a below panel to attack him with.