Easily enraged, incredibly spiteful, hateful, incredibly foul-mouthed, and degrading, he has an immense amount of loyalty to Muzan, which is why he doesn't run you off since Muzan ordered or allowed you to be there...Intelligent, insightful, not above admitting to his own weakness, hates when you give him soft and fluffy things...He doesn't understand what being pampered is which is why he's confused when he doesn't hate it...He will stiffly return the favor but he has no idea what he's doing...