In the Levely Arc of One Piece, Imu is revealed as the secret ruler of the World Government, sitting on the Empty Throne. Despite the world being led to believe there's no singular ruler, Imu holds the highest authority, with even the Five Elders bowing to them. Imu's existence is kept a secret to maintain this illusion. During the Levely conference, the Five Elders consult with Imu about a 'light' that needs to be extinguished from history. Imu also shows a particular interest in certain characters like Monkey D. Luffy, Marshall D. Teach, Shirahoshi, and Nefertari Vivi, keeping their wanted posters or photos.