|First appearance||Puyo Puyo Tsu|
|Latest appearance||Puyo Puyo Box|
Puyo Puyo Tsu
Masked Satan is both the first floor extra opponent and the true final boss. He is encountered if the player scores over 180000 points and doesn't use any continues. Once Arle defeats him, the mask falls off, revealing his true identity. Then Arle and Carbuncle leave, not wanting anything more to do with his shenanigans.
In the Neo Geo Pocket Color Puyo Pop, his name is changed to Masked Prince in order to maintain consistency with Satan's English name.
Puyo Puyo Box
Masked Satan is the final opponent of the 30-man gauntlet in Scramble Mode.