Minamoto no Yorimitsu
As an adult, Kintarō changed his name to Sakata no Kintoki. He met the samurai Minamoto no Yorimitsu as he passed through the area around Mt. Kintoki. Yorimitsu was impressed by Kintarō's enormous strength, so he took him as one of his personal retainers to live with him in Kyoto. Kintoki studied martial arts there and eventually became the chief of Yorimitsu's Shitennō ("four braves"), renowned for his strength and martial prowess. He eventually went back for his mother and brought her to Kyoto as well.