Ox-King (牛魔王 Gyūmaō) is a character in the Dragon Ball metaseries created by Akira Toriyama. He is based on Niúmówáng ("Ox-Demon-King", "Ox Devil Lord" or "Ox Tyrant"), a character from the Chinese novel Journey to the West, from which the Dragon Ball series is based on. In the novel, the character befriends the Monkey King (the equivalent of Goku).