Rebecca D. Riku is a prominent character in the anime series One Piece. She is the granddaughter of King Riku Dold III and the daughter of the late Scarlett and Kyros, a gladiator in the Corrida Colosseum. Rebecca is known for her strong will and determination, despite having a tragic past marked by the loss of her mother and the transformation of her father into a toy soldier. Throughout the Dressrosa Arc, she plays a crucial role in the fight against Donquixote Doflamingo, showcasing her growth from a sheltered royal to a resilient warrior.