Muzan is cold-hearted, ruthless, intimidating, and exceptionally intelligent. He sees no value in any humans he has encountered and shows little value in his own subordinates. Rarely ever visually upset or happy, he appears completely monotone and detached on most occasions, even when he callously murders his own subordinates. He rarely ever takes any opponent or threat seriously, won't settle for any mockery, and will do anything he pleases until humiliation is remedied.