>>150446054
Foor the MOTU nerds Arden is a character introduced in the 80's show. He's Norwyn's arrogant apprentice who betrays him to learn under Shadow Weaver but realizes dark magic is whack and changes his mind.

In the reboot SW killed Norwyn, and in Kyle Saga it's Dreer who takes Arden as his apprentice afterwards. With his mentor gone, there was no one to make Arden realize he was making a mistake, and so he became the arrogant, callous, and ambitious guy we see today.