About Imu
Saint Nerona Imu is the King of the World (世界の王, Sekai no Ō?) who occupies the Empty Throne, giving him sole authority over the World Government. One of the First Twenty responsible for the creation of the World Government and the only one alive today, his status has been kept an absolute secret from the world at large for over 800 years since the Void Century.
With the ambition of finally bringing the Great War to a decisive conclusion, Imu directed his subordinates the Five Elders to procure Dr. Vegapunk's invention, the Mother Flame, and ordered the Knights of God to annex Elbaph in an invasion that he eventually personally participated in.
Imu first appeared during the Levely Arc. Due to his status and actions, he is the overarching antagonist in the Egghead Arc, the main antagonist of the Elbaph Arc, and one of the primary overarching antagonists of the Final Saga and the One Piece series as a whole.
Imu has only been fully seen while in his partial devil transformation. He is shown to possess unique facial features with a defined nose and mouth, long eyelashes, dark skin, and long light hair that covers his left eye; with sharp, almond eyes with red irises, each having a thin ring around the pupil, with his irises having multiple rings within them. He has two curly horns, long, sharp, black nails, and circuit-like tattoos on his forearms that take the shape of an eye on the back of his hands, a jagged line tattoo from the left side of his face down his left torso, and white dots all over his arms, legs, and torso.