"Go F&*k Yourself" -Regis Christ
Regis Christ first appeared in Fallout For Pimps during season 1 episode 19, 'Vault 112'. Regis is Thrusty's personal lord and savior and often offers her guidance, even if his advice isn't very helpful. Thrusty often comes back to her room in Tenpenny Tower to pray to Regis, at which time Regis quizzes her on triva on Thrusty's father.
In episode 46 it is revealed that Regis is in fact the ghost of Thrusty's mother, who got trapped in a lightbulb while ascending to heaven.