Riku Doldo III is the once king of Dressrosa before Doflamingo's take over, and the grandfather of Rebecca.
Riku Doldo III is a supporting character in the One Piece series that was created by Eiichiro Oda. The series first began serialization in Shueisha's Weekly Shōnen Jump on August 4, 1997. He would later appear in the Dressrosa Arc that began in Volume 70.
His first appearance was in One Piece Volume 71 CH. 706 "I Ain't Gonna Laugh at Ya", and his first anime appearance was in One Piece - Episode ?? "??". No voice actor has yet to be announced for this character.