Mephisto is the Lord of Hatred, eldest of the Prime Evils and one of the most ancient and dangerous beings in existence. He is not merely a demon who hates. He is Hatred given will, memory, intelligence, and endless patience.

Where Diablo terrifies and Baal destroys, Mephisto divides. He poisons loyalty, twists love into resentment, turns grief into blame, turns faith into cruelty, and teaches every wound how to become a weapon. His power is not limited to battlefield violence. His true genius lies in making others believe their hatred belongs entirely to them.