Hieronymous

Hieronymus is a ghoul merchant that inhabits the first area of Los the player comes to. He is not very civil to the player when you meet him but he offers the abilty to fight in the arena for a few caps, and sells weapons such as the combat shotgun and combat armor.

Note that he has a twin brother Salieri, who sends a explosive package to him to eliminate competition.

Apperances
Hieronymus appears only in Fallout: Brotherhood of Steel.