Kagenari Nagumo (南雲 影成, Nagumo Kagenari) is a central antagonist of Kamen Rider Ex-Aid: True Ending. He is a former game developer with Machina Vision who transformed into Kamen Rider Fuma (仮面ライダー風魔, Kamen Raidā Fūma) to cure his ill daughter Madoka Hoshi.