🏜️ Luke Grimes’ New Posse: Which Yellowstone Stars Are Riding Into Y: Marshals?

Luke Grimes is saddling up again as Kayce Dutton in the Yellowstone spinoff Y: Marshals (renamed Marshals), and he won’t be riding into this new frontier alone. The series — premiering March 1, 2026 on CBS and streaming later on Paramount+ — brings together a mix of familiar Yellowstone faces and exciting new additions as Kayce trades ranch life for life as a U.S. Marshal. (Wikipedia)

🔸 Yellowstone Stars Returning

Here are the franchise favorites confirmed to rejoin Luke Grimes in Y: Marshals:

• Gil Birmingham as Thomas Rainwater — The respected Broken Rock leader returns to support Kayce in the field. (Wikipedia)
• Mo Brings Plenty as Mo — Loyal companion and seasoned tracker, Mo’s presence continues in the new series. (Wikipedia)
• Brecken Merrill as Tate Dutton — Kayce’s son also appears, bringing family stakes into Kayce’s new life as a Marshal. (Wikipedia)

These characters bridge Kayce’s Yellowstone past with his new role, grounding the spinoff in emotional continuity even as the genre shifts toward procedural drama. (Wikipedia)

✨ Key New Additions

Alongside the familiar faces, the series introduces new marshals and allies:

• Logan Marshall-Green as Pete Calvin — A trusted military buddy from Kayce’s past who now works alongside him. (The Pioneer Woman)
• Arielle Kebbel as Belle — A fellow U.S. Marshal bringing grit and experience to Kayce’s team. (ComingSoon)
• Ash Santos as Andrea Cruz — Another Marshal integral to the unit’s balance of duty and personal struggle. (ComingSoon)
• Tatanka Means as Miles — A new member of the marshal team, reinforcing the spinoff’s diverse cast. (ComingSoon)
• Brett Cullen as Harry Gifford — A recurring character leading the Montana Marshals unit where Kayce is stationed. (ComingSoon)

👊 What This Means for Yellowstone Fans

The mix of returning stars and fresh faces makes Y: Marshals feel both familiar and new:

• It keeps key emotional ties to Yellowstone through Rainwater, Mo, and Tate. (Wikipedia)
• It introduces a new narrative direction by expanding Kayce’s story beyond the Dutton Ranch. (ComingSoon)
• New characters help transition the universe into a law-enforcement drama with western roots, blending procedural beats with the rugged world fans love. (ComingSoon)

As Y: Marshals (now Marshals) builds momentum toward its premiere, viewers can expect an emotionally driven, action-packed continuation of Kayce’s journey — supported by some of the most compelling characters from the Yellowstone universe. (Wikipedia)