Agent Stahl was portrayed by the fabulous Ally Walker, who worked with Kurt Sutter on The Shield and got the role from that friendship.
He also loved the idea of being on the show because of the cast.
But the one role he really loved playing was Jimmy O.
But even though the show came across as hardcore, the feeling on the set was almost always pleasant.
Since he worked with Kurt before, Walton was already good friends with him and had no trouble getting along with the rest of the crew.