Leotard Devil (Haigure Devil) (High-leg Maou) (Demon Haigure) (Higure Rakshas) (ハイレグ魔王) appeared in Crayon Shin-chan: Action Mask vs. Leotard Devil. He is a alien from another dimension who attempts to invade Earth.
Leotard Devil tries to change all the earth peoples into high-leg human who put on high-leg cut leotard. He is concealing his appearance usually putting on the mask and the mantle. He wears a leotard with red high leg cut with his mohican head. He looks like the beautiful woman who has a light blue skin. However, he is a gay. He attacks by electric shock, the phylactic power is also high.
He makes a cameo in the anime in the special Crayon Wars, where he and other characters in the movies enjoyed a show in a restaurant.