Kawatarō (川太郎) is an alternate name for the kappa (河童) used in Edo-period Japan and in classical texts. It means “river boy” or “river elder”: kawa (川, river) and tarō (太郎, a common male name suffix). It refers to the same iconic water spirit—the creature with a dish on its head, webbed hands and feet, and a fondness for cucumbers and sumo wrestling.
Kawatarō is described the same way as the kappa: a small, humanoid water spirit with greenish skin, a bowl-shaped depression (sara) on the head that holds water, webbed limbs, and sometimes a turtle-like shell. It pulls people into the water, challenges them to sumo, and can be weakened by bowing (so it spills the water). It loves cucumbers and can be offered them to gain favor or safe passage.
Japanese folklore often uses multiple names for the same yokai. Kappa (河童) literally means “river child.” Kawatarō (川太郎) gives the spirit a more person-like, almost familial tone (“river Tarō”). Both names appear in period art and stories; “kappa” eventually became the default in modern usage, while “Kawatarō” remains the Edo-era name for the river child of Japanese mythology.
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