Puyo Puyo SUN, Arle's scenario, VS Witch. Lesson: Never sleep on a tree alongside other sleeping people.
Masked Satan's appearance in Puyo Puyo TSU. Other versions of the game have you fighting Santa instead.
Arle's encounter with Schezo in the original game's CD remake is damn funny too, specifically the extended version when played on Hardest. Schezo says his (always misunderstood) Catch Phrase, but Arle completely misinterprets it as wanting something...more than that, turning red and saying she's not a lady yet and her heart's not ready. The funnier part is that all of the sexual implications fly way past Schezo's confused head. Is he sexually oblivious? Maybe.
In Puyo Puyo Tetris, Arle was strengthening herself to be able to travel through space time, requiring to pick an opponent. The problem is...Schezo, Rulue, and Satan begin to argue on who gets to play against her. How do they settle it? ROCK PAPER SCISSORS. The result? Schezo wins and is Arle's opponent, and we get a jealous Satan.