A mask used in kyōgen 狂言 plays to represent a demon. Glaring eyes, a wide jaw, and bared teeth give the mask a fierce appearance, but this is combined with a hint of weakness and timidity. The face is often painted reddish-brown. The resulting expression is comical, good-hearted, or even a little sad, perfectly representing the personality of the kyōgen demon. Buaku is used in a large number of plays like "A Demon in Love," Setsubun 節分, and represents Enma 閻魔 (The King of Hell) in "A Sinner with References," Yao 八尾 and "Asahina the Warrior," Asahina 朝比奈. Buaku also is used as a "fake" representation in "A Demon for Better Working Conditions," Shimizu 清水, when a servant tries to scare his master by pretending to be a demon. He puts the mask on and takes it off as he switches roles between himself and the demon. A variation of buaku is used to represent the thunder god, kaminari 神鳴, in the play, Kaminari.