A supporting character from the manga and anime One Piece. He is the king of Alabasta and father of Vivi.
Warning, heavy spoilers follow here!
By the way of his ancestor Nefertari D. Lily, he and his daughter are all carriers of the mysterious "Will of D." just like, say, Monkey D. Garp or Gol D. Roger. He tried to find out about said legacy from the Five Elders, but was Murdered by them and Nerona Imu