Luke Grimes is reprising his role as Kayce Dutton on the upcoming Yellowstone spinoff Y:Marshals, but not much else is known about the series. It will air on CBS in 2026, but fans have been waiting on details of the cast. Will any of Kayce's family members, namely wife Monica (Kelsey Asbille) and son Tate (Brecken Merrill) be joining the new show?

Logan Marshall-Green has been tapped as a lead opposite Luke Grimes in CBS’ Yellowstone spinoff series Y: Marshals, in which Grimes reprises his role as Kayce Dutton from Taylor Sheridan’s hit Paramount Network drama.

Marshall-Green is known for his roles in Spider-Man: Homecoming, Upgrade, and Prometheus, and was most recently seen in a major recurring role on HBO Max’s And Just Like That…. He’ll next appear in Christopher Nolan’sThe Odyssey, set for release in 2026.