Biography: Zahn McClarnon is an American film and television actor of Native American and Irish descent. He's best known for his roles as Joe Leaphorn on AMC's series Dark Winds (in which he was also an executive producer), Big on Hulu's series Reservation Dogs, Yvon on NatGeo's miniseries Barkskins, Tulimak in the film Togo, Crow Daddy in Doctor Sleep, Hallett in the film Braven, Toshaway in AMC's The Son, The Professor in the film Bone Tomahawk, Akecheta on Westworld, Hanzee Dent on the series Fargo, Officer Mathias on A&E's Longmire, Running Fox on TNT's miniseries Into the West, and Little Big Man in the film Crazy Horse.