Satan, or Dark Prince in English versions, is the main antagonist of the Puyo Puyo series. He likes dressing up in Hawaiian shirts and has an interest in Carbuncle. He also has a crush on the series' heroine, Arle Nadja, and claims that she is his "fiance". He is often the final boss in most of the games, with the exception of Puyo Puyo~n, Puyo Puyo Fever, Puyo Puyo Fever 2, and Puyo Puyo 7. He also has the ability to make Puyo fall fast, making it a difficult battle. Satan has several supporters, including Draco Centauros and Rulue, Arle's rival.