Lao is a elderly man and a skilled Martial Artist, who first appears in the Dragon Ball Z Filler episode "A Girl Named Lime" It is revealed in Pre-Dragon Ball, that he once fought with Master Roshi and his friends, and is one of his good friends. he was the inventor of the Lion Style Kempo Fist. He is the father of Lang, a fighter that Goku defeated in the 21st World Martial Arts Tournament during the preliminaries, and the grandfather of Lime.