Shōgo Kawashima (川島 省吾, Kawashima Shōgo; born 2 February 1977, in Hanamigawa-ku, Chiba, Chiba), known by the stage name Gekidan Hitori (劇団ひとり; 'one-person troupe') is a Japanese comedian, lyricist, actor, novelist, and film director. Gekidan is mainly known his improvisational ability and for his style of physical comedy. He is represented with Ohta Production.
Source: “Gekidan Hitori”, English Wikipedia (CC BY-SA 4.0), excerpt