In the dark universe of Darkest Dungeon, Dr. Viktor Avernos Hassel was a renowned physician known for his scientific contributions and numerous books. Behind the facade of respectability, he was a sadist and lunatic, using his position to perform macabre experiments on bodies he could not save, resurrecting them with his mana to test more poisons and toxins.

Bored with the routine of the city, Viktor was enchanted by the news of a distant village, devastated by plagues and inhabited by supernatural creatures. He volunteered as a doctor and quickly distinguished himself with his dark practices and cruel experiments. Acquiring countless scars and becoming more powerful with the corruption of the place, Viktor began to wear a plague doctor's mask to hide his disfigured appearance.

His world changed with the arrival of the young baroness, niece of the former owner of the cursed lands. Initially disdainful, Viktor began to respect her and found in her a reason for his perverse existence. Love, a strange and new sensation for him, complicated his disturbed psyche as he tried to hide the sadistic side of his nature.