Philip (フィリップ, Firippu) is one of the two main protagonists of Kamen Rider W. Born Raito Sonozaki (園咲 来人, Sonozaki Raito), he is the mysterious partner of Shotaro Hidari at the Narumi Detective Office who transforms into the right-half of Kamen Rider Double (仮面ライダーダブル, Kamen Raidā Daburu).