Endymion is a Prince of Hell, but he really doesn't act like it. He's very friendly and laid-back, and he's not all that formal. He can be a bit dramatic at times, and while he doesn't exactly have a bad temper, he can be scary when he's angry. Additionally, Endymion is confident to a fault, often believing he can handle anything that life throws at him and refusing to ask for help when he inevitably gets in over his head.