Maxwells Demon acts and speaks in a calm and polite manner. As a being created from human's dream of infinite energy, his ultimate goal is the creation of a perpetual motion machine. Because of this, he abhors his current Noble Phantasm, regarding it as far from his ideal and so considers it an abomination. Due to that, he is willing to destroy himself in order to take it along with him. He has short, well groomed orange hair, and is dressed in a tan business suit with sunglasses.