Garrett, the troubled former Navy SEAL who reenters Kayce Dutton’s life in Marshals, is played by country singer Riley Green. That casting detail has drawn attention because the role marks Green’s acting debut, giving Yellowstone fans and country music audiences a crossover moment that feels very deliberate. Based on coverage from TVLine, Parade, TV Insider, and Military.com published in April 2026, Garrett is not just a one-scene guest role either. He is written as a meaningful part of Kayce and Cal’s shared military past.
Riley Green plays Garrett in Marshals
The short answer is simple: Riley Green plays Garrett in Marshals. Multiple entertainment outlets identified Green as the actor behind the character, including TVLine in coverage published two days ago, Parade in a report published six days ago, and TV Insider in separate previews and recaps published within the past week. Those reports consistently describe Garrett as one of Kayce and Cal’s former Navy SEAL teammates, which confirms both the casting and the character’s backstory.
That matters because Marshals is built around Kayce Dutton’s next chapter after Yellowstone. Luke Grimes returns as Kayce, and the series places him inside a Montana-based U.S. Marshals unit. In that setup, old military relationships carry real dramatic weight. Garrett is not just another case-of-the-week figure. He is someone tied to Kayce’s life before the ranch, before the badge, and before this new phase of the story.
Why Garrett matters in Kayce’s story
Reports about the episode make it clear that Garrett’s arrival is meant to stir up unresolved trauma and loyalty. Parade described the storyline as one in which Kayce and Cal “struggle to reckon with their time at war” when Garrett drifts back into their lives during a manhunt. TV Insider’s recap adds more detail, saying Garrett arrives unexpectedly at Kayce’s ranch and reveals that his life after military service has been unstable, including time in jail, psych wards, rehab, and periods of homelessness.
That gives the character more depth than a standard guest appearance. Garrett represents the cost of service in a very direct way. In a show already centered on duty, violence, and the emotional toll of enforcement work, bringing in a former teammate with visible scars from the past raises the stakes fast. It also gives viewers a different lens on Kayce. Fans know him as a rancher, husband, father, and former soldier. Garrett forces the series to revisit that soldier identity in a more personal way.
Is this Riley Green’s first acting role?
Yes. The available coverage identifies Marshals as Riley Green’s acting debut. TVLine explicitly called it his debut, and Parade echoed that point in its own preview of the episode. That is one reason the casting has generated so much interest. Green is already well known in country music, so stepping into a scripted television role, especially in a high-profile Yellowstone spinoff, is a notable move.
Military.com also reported on Green’s comments about the pressure of portraying a Navy SEAL. That angle adds credibility to the discussion around the role because it shows he understood the responsibility attached to playing a military character. The same report noted that Garrett is written as someone who plays guitar, a detail that lightly overlaps with Green’s real-life persona without turning the character into a wink at the audience.
That balance is important. If the show leaned too hard on Green’s music fame, Garrett could feel like stunt casting. Instead, the early reporting suggests Marshals uses Green’s presence to support the character rather than overwhelm him.
What kind of character is Garrett in Marshals?
Garrett is portrayed as a former Navy SEAL with deep ties to both Kayce and Cal. He is not introduced as a polished hero returning in triumph. Quite the opposite. The character appears to be carrying serious emotional and psychological damage from his post-service life. According to TV Insider’s recap, Garrett has been “in and out” of institutions and unstable living situations since leaving the military. That makes him one of the more vulnerable figures introduced in the series so far.
Other previews frame him as a catalyst. Country Now, citing a sneak peek shared by USA Today, described Garrett as reuniting with his former teammates in the middle of an intense manhunt involving a dangerous enemy. TVLine similarly positioned his return as pleasant for Kayce but more complicated for Cal, hinting at old tensions within the trio.
So Garrett serves at least three functions in the story. He expands the show’s military backstory. He creates emotional conflict between established characters. And he gives Marshals a way to explore what happens to veterans after service ends.
Why Riley Green was a notable casting choice
On paper, Riley Green might seem like an unexpected pick for a Yellowstone-universe drama. But the fit makes more sense the closer you look. The franchise has always overlapped with country audiences, western imagery, and stories about masculinity, loyalty, and place. Green already carries that cultural association. Casting him as Garrett lets Marshals tap into that audience while still giving him a role that has dramatic substance.
There is also a practical storytelling advantage. Because Garrett is an outsider entering an established world, a fresh face can help. Viewers do not bring a long list of previous TV roles into the performance. That can make the character feel more immediate. In this case, Green’s public image may help him register quickly as someone who belongs in the rugged emotional landscape of the series.
At the same time, the role is not all image. The reports around the episode stress Garrett’s instability, pain, and history with Kayce and Cal. That means Green is being asked to do more than show up and look the part. He has to sell a character whose presence reopens old wounds.
How Garrett fits into the larger Marshals cast
Marshals centers on Luke Grimes as Kayce Dutton, with Logan Marshall-Green playing Pete “Cal” Calvin, another former SEAL and a key figure in the team. Garrett slots naturally into that dynamic because he shares the same military history. TVLine, Parade, and TV Insider all frame him as part of that former brotherhood, which suggests his role is designed to deepen the bond and friction between Kayce and Cal rather than distract from the main story.
That is probably why the character has landed with viewers so quickly. He is connected to the core cast in a way that feels organic. In a spinoff, that kind of connection matters. New characters need to justify their screen time. Garrett does, because he reveals something about the men audiences are already invested in.
Will Garrett return after his first appearance?
There are signs that Garrett’s story may continue, though not every outlet gives the same level of certainty. TV Insider published a piece asking when Riley Green’s episodes air, which implies more than a one-off appearance. Another TV Insider recap also focused on how Garrett was introduced and when he would be back, again suggesting the character has an ongoing role beyond a single scene or mention.
That does not automatically mean Garrett becomes a permanent fixture. But it does indicate that Marshals intends to do more with him than simply use him as a brief cameo. Given the emotional material attached to the character, that would make sense.
Frequently Asked Questions
Who plays Garrett in Marshals?
Garrett is played by Riley Green. Multiple outlets, including TVLine, Parade, and TV Insider, identified Green as the actor portraying Kayce and Cal’s former Navy SEAL teammate.
Is Riley Green an actor or a singer?
Riley Green is best known as a country singer. Marshals is widely described in entertainment coverage as his acting debut, making Garrett his first major scripted television role.
Who is Garrett in relation to Kayce Dutton?
Garrett is one of Kayce Dutton’s former Navy SEAL teammates. Reports also connect him to Cal, meaning he shares military history with two important characters in the series.
What is Garrett’s storyline in Marshals?
Garrett returns to Kayce and Cal’s lives during a dangerous case and forces both men to confront their wartime past. Coverage of the episode also indicates that Garrett has struggled badly since leaving military service.
Is Garrett a major character or just a guest star?
He appears to be more than a throwaway guest role. Early coverage suggests Garrett has meaningful ties to the central cast and may return in additional episodes.
Why has this casting gotten attention?
The casting stands out because Riley Green is making his acting debut in a Yellowstone spinoff with a built-in fan base. It is a crossover between country music and one of television’s biggest modern western franchises.
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