Cha Katō (加藤 茶, Katō Cha; born 1 March 1943), also known as Kato-chan, is a Japanese comedian and actor. His real name is Hideyuki Katō (加藤英文). Cha is one of the members of The Drifters and plays drums. His work with Ken Shimura, another Drifter, is well known in Japan.
Source: “Cha Katō”, English Wikipedia (CC BY-SA 4.0), excerpt