Kintarō (金太郎?, often translated as "Golden Boy") is a folk hero from Japanese folklore. A child of superhuman strength, he was raised by Yama-Uba on Mount Ashigara. He became friendly with the animals of the mountain, and later, after catching Shuten-dōji, the terror of the region around Mount Ooe, he became a loyal follower of Minamoto no Yorimitsu under the new name Sakata no Kintoki (坂田 金時). He is a popular figure in noh and kabuki drama, and it is a custom to put up a Kintarō doll on Boy's Day in the hope that boys will become equally brave and strong.
Kintarō is supposedly based on a real man, named Sakata Kintoki, who lived during the Heian period and probably came from what is now the city of Minami-ashigara. He served as a retainer for the samurai Minamoto no Yorimitsu and became well known for his abilities as a warrior. As with many larger-than-life individuals, his legend has grown with time.