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Marquis Andrealphus of the Ars Goetia is a major antagonist in the adult animated web series Helluva Boss, serving as one of the two overarching antagonists (alongside Stella) of the Season 2 episode "Western Energy". He is the brother of Stella, Octavia’s maternal uncle and Stolas' former brother-in-law as well as one of his archenemies alongside her.