Chiaotzu ( 餃 チャオ 子 ズ , Chaozu) is a white-skinned, red-cheeked little Earthling.

What is Chiaotzu supposed to be?

Despite his strange uniqueness, Chiaotzu is confirmed to be a human from Earth, just like his partner Tien. The reason for Chiaotzu's appearance is not his heritage, but the influence of Chinese fiction on Dragon Ball creator, Akira Toriyama.

How is Chiaotzu an emperor?

After one of Chiaotzu's deaths and resurrections by the titular Dragon Balls, he is referred to as “Emperor Chiaotzu.” While this sense of reverence may seem misplaced, it's actually due to a misunderstanding. In the seemingly non-canon movie Dragon Ball: Mystical Adventure, Chiaotzu actually plays royalty.