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"Yellowstone" Spinoff "Y: Marshals" Assembles Impressive Cast
26 Aug
Summary
- "Yellowstone" stars Luke Grimes, Gil Birmingham, Mo Brings Plenty, and Brecken Merrill join the cast of spinoff "Y: Marshals"
- New cast members include Arielle Kebbel, Ash Santos, and Tatanka Means as U.S. Marshals
- Brett Cullen to play the head of U.S. Marshals in Montana

In a highly anticipated move, the "Yellowstone" spinoff series "Y: Marshals" has announced the addition of several familiar faces to its cast. As of August 26th, 2025, the show's lead actor, Luke Grimes, is set to reprise his role as Kayce Dutton from the original "Yellowstone" series.
Joining Grimes are fellow "Yellowstone" alums Gil Birmingham, Mo Brings Plenty, and Brecken Merrill, who will be reprising their roles as Thomas Rainwater, Mo, and Tate Dutton, respectively. The new series will also feature a talented ensemble of newcomers, including Arielle Kebbel as Belle, Ash Santos as Andrea, and Tatanka Means as Miles, all of whom will be portraying members of the U.S. Marshals.
Rounding out the cast is actor Brett Cullen, who is slated to appear in a recurring role as Harry Gifford, the head of the U.S. Marshals in Montana. The spinoff, which is set to premiere later this year, will follow Kayce Dutton as he joins an elite unit of U.S. Marshals, combining his skills as a cowboy and Navy SEAL to bring "range justice" to the state.