Boardwalk Empire Actor FURIOUS With His Character Arc

Michael Shannon played Nelson Van Alden in HBO's gangster series Boardwalk Empire, a major character in the crime drama. Van Alden has an interesting character arc, starting off as an agent for the Bureau of Prohibition, and ending up working for gangster Al Capone.
Though he was in every season, the actor expressed dissapointment in his character's Boardwalk Empire arc.