Bjorn is a member of the Wolves brotherband.
He is chosen by Rollond to enter the Wolves brotherband and is later picked to represent the team in the wrestling contest. He first fights Stig, and, knowing that Stig has a violent temper, provokes him so that he does something rash. Bjorn beats Stig easily after he looses his temper.
Bjorn then fights Tursgud and his arm is almost broken in the fight because Tursgud gets him into an armlock.
Later, Bjorn wrenches his arm again on the Lynx, the ship used by the Wolves in the sea exercises.