King Kai (or north Kai, Kaio-sama, in the Japanese version), is a character of the dragonball universe. He loves chokes and cracks them frequently throughout the series when the situation calls for it, his jokes are almost entirely puns.
King Kai is one of the four Kais that oversee their part of the universe. The other three being West Kai, East Kai, and South Kai. He is Goku's 3rd Material Arts teacher, and he teaches him the Spirit Bomb and Kaioken techniques.
See also: Grand Kai, Supreme Kai.
King Kai watches over the north quadrant of the universe.