Kai Grand Master is the highest position in the hierarchy of the Kai, and is given to the Kai warrior who has mastered all of the Kai and Magnakai disciplines. It was thought to be the most advanced a Kai warrior could achieve until Lone Wolf discovered that it is possible to become a Kai Supreme Master after the fall of the Darklords.
As of the New Order series, there are five Kai Grand Masters (not counting Lone Wolf). One of them, Grand Master, is the protagonist of the New Order series. The name of only one other Grand Master is known: Bright Star, a friend of Grand Master's, mentioned at the start of Rune War.