Nobody knows what he did before he became a professional bloodbowl player but most people think he had to be a mix between a dancer and a butcher.
Seth eaisly moves through the enemis line and stops only to rip someones head from his shoulders. If you ask him what he likes most on bloodbowl besides that he gets money for hurting people, he would answer: "the face of my eneims when they recornize that i didnt came for the ball in there hands".