Ginro (銀ギン狼ロー Ginrō) is Kinro's brother, and one of the village guards. He starts hanging around Senku during his stay in the village and is one of the first villagers to join the Kingdom of Science. Being usually used like a "pack mule" for labor in the Kingdom of Science, Ginro tries shirking out of any job he's given regardless of the effort needed; Kohaku and Kinro usually drag him along. During the adventure on Treasure Island, Ginro manages to convince an unpetrified warrior to serve him due to the resemblance he bears to his late master, gaining protection from his former "tormentors".