SK Mugshot

The Soul King.

The Soul King (霊王, Reiō; aka "Soul King") otherwise known as the Grand Supreme Kai (大界王神, Dai Kaiōshin; lit. "Grand Kaioshin" or "Grand God King of the Worlds") is revered as the King of the Soul Society, however, his role is much bigger than simple royalty, due to his position as the Grand Supreme Kai. He is the highest of all Supreme Kais and rules over the entire universe.