The Mortician could also be considered as a monster just below the big three in Mount Spirit Sword Asylum.
He was far powerful than the average patients, but he also had a special place in Mount Spirit Sword Asylum. He may not be as strong as the Benevolent Father, Arthur Chase, and the Butcher but none of these three dared to offend him.
It was because the Mortician was a madman.
He was a known corpse collector and none of the patients, even the big three knew what he did with those corpses. All they knew was that the Mortician liked to collect them and he strived to keep the cleanliness of the asylum like the Butcher.
Speaking of corpses, Calvin's group had just encountered a mountain of corpses earlier.