Warsteiner is an original super mutant from the Master's army. Even back then, he was odd for having an obsession with probabilities that made little sense to his comrades. After the Master's death, he moved north and became a prize fighter along the way, something that gave him great joy in calculating his win probability and then beating anything to a pulp that stood in his way. He is otherwise a gentle giant and only fights when the other party wishes to do the same.

By the time he is encountered by the player, he has been framed by gambler who lost big on Warsteiner by pinning the killing of livestock on him. Warsteiner does not understand his arrest and thinks he's being led to a fight soon, completely unaware that his life is in-danger.

The player will ultimately decide Warsteiner's fate in his trial, but he is accompanied by the Mister Handy advocate Reginald, Esq. who has a hard time parsing Warsteiner's rambling.

Warsteiner also has combat lines when the player accepts his request to fight.