Zahn McClarnon is a Native American actor who is known for his guest starring roles in various television shows. McClarnon was in the Into the West (2005) miniseries for TNT and played Running Fox (also portrayed by Russell Means), brother of Dog Star played by Michael Spears and Gil Birmingham. He has starred in a 2009 film Not Forgotten and a comedy film Repo Chick. In 2013 he was in the horror movie Resolution directed by Justin Benson. He had a recurring role as Bodaway Macawi in Ringer. He currently portrays the Cheyenne reservation chief of tribal police, Officer Mathias, in Longmire, an A&E television series.