Background
McClarnon was born in Denver, Colorado, the son of a Hunkpapa Lakota mother and Irish father.
McClarnon was born in Denver, Colorado, the son of a Hunkpapa Lakota mother and Irish father.
McClarnon was in the miniseries for TNT and played Running Fox. He starred in the 2009 film Not Forgotten and comedy film Repo Chick. In 2013, he was in the horror movie Resolution.
He had a recurring role as Bodaway Macawi in Ringer.
He also played Mike Parker in the first four episodes of the SundanceTV series The Red Road. Since 2012, McClarnon has portrayed the Cheyenne reservation Chief of Indian Tribal Police, Mathias, in Longmire, originally an A&East and now a Netflix television series.