Kidōmaru

Kidōmaru (鬼童丸, 鬼同丸) is an oni that appears in the Kamakura period collection of setsuwa, the Kokon Chomonjū, among other sources.

Kidōmaru then went ahead to Kurama, killed one free-ranging cattle at the Ichihara field, hid inside its body, and waited for Yorimitsu to come.

[1] In the yōkai pictures collection, the Konjaku Hyakki Shūi by Toriyama Sekien, under the title of "Kidō," it depicts Kidōmaru in the snow wearing the skin of a cattle waiting for Yorimitsu to come.

[3] The Zentaiheiki, a collection of war tales, theorizes this oni to instead be an abandoned child of Shuten-dōji, and originally Kidōmaru was a young child at Mount Hiei but came to ruin as a result of wicked deeds, and was therefore chased away from Mount Hiei, and then migrated to a cave in the mountains and became a bandit.

[2][4] According to the "Shitennō Shōtō Iroku" (四天王剿盗異録) by Takizawa Bakin, at a cave in the mountains, Kidōmaru met Hakamadare, a bandit of the Konjaku Monogatarishū, where there was a scene of a contest comparing skills.