Riley Green Joins Yellowstone Spinoff Marshals as Troubled Ex‑SEAL

riley green is making his acting debut in the Yellowstone spinoff Marshals, stepping into the role of Garrett — a former Navy SEAL whose post‑service struggles drive his storyline. The show, which expands the Yellowstone world, premieres on March 1.

Riley Green on Garrett's Struggles

Riley described Garrett as a character marked by trauma from his time in service. "Garrett is a former Navy SEAL, was on the teams with Luke. He’s troubled, " he said. "He’s got some issues in what they went through together back in the day. As he shows back up, he’s struggling to deal with all that, and Kayce is constantly trying to help him and let him into that Western lifestyle and what they have out there as Marshals. It’s a pretty vulnerable character. He’s had a tough time, and that was the cool thing for me to try to get into that position and mentally go there. It was a great character for me. "

The role gives Riley a chance to portray a complicated, vulnerable figure rather than a one‑note presence. He also confirmed that the character has a small musical touch: "I get to play a little bit. Garrett does play a little guitar. "

Working Alongside Luke Grimes

Marshals reunites Garrett with Kayce Dutton, the character Luke Grimes reprises for the spinoff. Viewers will also see familiar Yellowstone faces return in their established roles, creating continuity with the original series.

Riley credited his friend Luke Grimes with encouraging him to try acting. He explained that he had helped Grimes with music, and Grimes in turn supported Riley’s move into performance onscreen. Riley called the shoot "a really fun experience, " and said the transition into acting was a significant learning curve. "It was something I went into somewhat nervous…I don’t get nervous to play shows anymore, I’ve been doing it so long, but this was a brand‑new thing for me. It was a big learning curve, and I’m glad they were patient with me. " The Yellowstone actor’s own music efforts include a new album set to drop on April 3.

What to Expect at the Premiere

When Marshals premieres on March 1, audiences will see Riley Green step into a dramatic, vulnerable part that ties back to shared history with existing characters. The combination of the role’s military backstory, its emotional weight, and the small musical moment creates a clear crossover point between his music career and his new acting work.

Key takeaways:

• Riley’s first acting role places him in a complex part as Garrett, a former Navy SEAL.
• The character’s struggles are linked to past events with Kayce, creating an emotional throughline.
• Riley will perform a little on screen, as Garrett plays some guitar.

With the March 1 premiere approaching, viewers will be able to judge how Riley transitions from stage performer to dramatized, vulnerable character. If the character’s vulnerability connects with audiences, it may highlight crossover interest from his music fanbase and offer a new dimension to the spinoff’s cast dynamics.