Saikoro Kuma is the Swordsmen and First Mate of the Bucket Hat Pirates. Before he met Sulfer, he was a student of Saikoro family dojo. He was the most promising student in the dojo. When Kuma saw a bounty of Roronoa Zoro, he decided to become just like him. When he grew up, he went on his adventure with Sulfer (not until after he gave Sulfer a scar and both fought an army of pirates to save the people in the town).