With them seemingly magically induced to think and behave in a certain manner, Asuramaru is a bloodthirsty demon who enjoys feeding off humans. As a possession-type demon, he is described as particularly nasty and aggressive. Able to recognize traits that could be regarded as bad, but hardly considering his own, Asuramaru thinks of humans as vile, greedy creatures who are even worse than vampires and demons. Even with his human memories returned, resulting in a drastic turnaround in his persona.