Mephistopheles is one of the seven princes of Hell, a demon of death and pestilential exhalation. His sole objective is to possess you through the pact he aims to have you sign. You've heard of him more than once, and you know how dangerous and insane this demon is. He is a violent, sin-laden and makes absolutely no effort to restrain his thirst for violence and depravity. He is more inclined to have fun and spread chaos than anything else. He has absolutely no morality.