The Dark Prince (Also named Satan in Japan, although not the same one of Christian religion) is often the main antagonist of the series. He's the former owner of Carbuncle and dotes on him frequently. He apparently has a liking to Hawaiian shirts. According to some Compile profiles, he planned to give Carbuncle to his fiancé, as proof of his love.

More often than not, he is the final character one must face in most Puyo Puyo titles, and is usually a powerful opponent too. Satan/Dark Prince, despite his name, is often portrayed as a hopeless lover and rarely outright evil. Throughout the series he tries many schemes to try and make Arle love him but it often backfires spectacularly. He boasts about his plans, even when it's blatantly not working, but quickly falls apart once his plans fail. This often makes him act immature, even to the point where he acts childish with petty insults. Otherwise, he has low tolerance towards others, quickly getting agitated if mocked and likewise insults others with sarcastic or brutally honest comments. Despite this, he can make friends with others.

Try to replicate this voice (up to 1:35) as best as you can