Vassago

Vassago, voiced by Harvey Guillen, is a new goetia introduced in the HelluvaBoss episode “The Mastermind”. Like Stolas, he is a member of the Ars Goetia, the demon royalty of hell. While he has only appeared in HelluvaBoss once so far, he was also originally introduced in the Hazbin Hotel pilot as a potential overlord but was changed later.