Shin Kaiohshin, often referred to simply as the Supreme Kai, is a major supporting character in the Dragon Ball series. As the overseer of the universe, he holds the highest position among the Kai, responsible for maintaining balance and order. He is introduced during the Majin Buu Saga, where he works closely with the Z Fighters to prevent the resurrection of Majin Buu. Shin is wise, compassionate, and possesses vast knowledge and mystical abilities vital to the series’ pivotal events.