Butcher Groff is a friendly, heavy-set Marienburg man with an unkempt appearance and a booming voice and laugh. Behind this jovial mask, he is a cultist of Nurgle, dedicated to spreading the gifts of Father Nurgle far and wide. He has joined Tobias and Ruprecht because they have promised him that he will be allowed to spread the greatest plague the Empire has ever known. He's so happy about this that his jolliness isn't really an act.[1a]