Searxng/Marshals TV show tv Celebrity Who replaces John Dutton? Discover how Thomas Rainwater takes the lead in the new Yellowstone spin-off, Marshals, shifting the saga's power. March 25, 2026 AceShowbiz - The iconic role of John Dutton, originally portrayed by Kevin Costner in the hit series Yellowstone, was always going to be difficult to fill. As the central figure and driving force behind the Dutton family saga, John Dutton's character was the foundation upon which the entire Yellowstone world was built.