While the four Kais (King Kai, West Kai, South Kai and East Kai) are ruling in the four segments of the galaxy, Grand Kai (大界王 Dai Kaiō) oversees them all. Goku is brought to him in the beginning of Great Saiyaman Saga by King Kai. Grand Kai is portrayed as an aged hipster, wearing jeans and a denim jacket and constantly listening to rock music on his boom box. His home is the Grand Kai's Planet. He is considerably stronger than the other Kais and is known to be the greatest fighter in the universe.