Jankenman (1991)
Original title: ジャンケンマン
Jankenman is a 1991 Japanese-language animation series. It stars Kotono Mitsuishi, Mika Doi and Omi Minami.
There is a small village called Janken Town. The hero Jankenman protects the village and defeats his adversaries by playing games of rock-paper-scissors with them. Meanwhile, the villain Osodashi Mask always tries to deceive others.