The character of "Pete Plenty Clouds" is played by Cole Brings Plenty, who is the nephew of Yellowstone actor, Mo Brings Plenty. Cole's Father is Mo's brother, Cheyenne River Sioux Chief Joseph Brings Plenty.
Jerome Flynn (Banner Creighton) and Joseph Mawle (Captain Shipley) have previously worked together on several shows, most notably in Game of Thrones (2011) as Bronn and Benjen Stark, respectively. They also appeared together in the series Ripper Street (2012), which is about the police detectives and constables that worked during the Jack the Ripper killings, playing Detective Sergeant Bennet Drake and Detective Inspector Jedediah Shine, again respectively.