Kai

Kai Brewer is currently the Junior World Martial Arts Champion. He is Jack's distant cousin, and he was the one who beat Jack really badly in one match which led to him giving up karate until he arrived at the Bobby Wasabi dojo. He trained with Jack, learning from their grandfather. Jack's family is ashamed of Kai because he thought about Karate as intimidation and hurting people. He was seen only once in, "Kickin' It In China",where Jack finally beat him but it wasn't counted because Jack had already forfitted because of a broken hand indirectly caused by Kai.

Appearances

 * Kickin' It in China