NCIS: OriginsWho should play the young version of Mark Harmon's Gibbs on
Published on December 01, 2025 EDT We have some thoughts about who could take up the mantle of Leroy Jethro Gibbs.

NCIS fans, get ready to see Gibbs like you've never seen him before.

CBS announced Friday that its flagship procedural is getting a '90s-set prequel series, NCIS: Origins, which will follow a younger version of Mark Harmon's beloved character, Leroy Jethro Gibbs, as a newly minted special agent making a name for himself at Camp Pendleton. While Harmon will be returning to the NCIS franchise to narrate and executive-produce Origins, he won't be starring — which raises a big question.

Who should play young Gibbs?

Of course some major names come to mind, guys like Glen Powell and Austin Butler. But they're securely movie stars at this point and not likely to commit to leading a network show. (There's also Harmon's son, Sean Harmon, who has played a young Gibbs on NCIS, but he's exec-producing Origins with his dad.) So, the EW staff has some ideas about who should be your grandma's next crush.

Gregg DeGuire/WireImage; Tony Esparza/CBS; Frazer Harrison/Getty Images

Lucas Till is already in the CBS family and proved he can handle an fan-favorite prequel character with MacGyver. Plus, that jawline screams young Mark Harmon. —Sydney Bucksbaum

As Riverdale hunk Archie, KJ Apa proved he can handle the most absurd of network television scenarios. Now he can graduate and trade his ginger locks for a fresh blond look! —Maureen Lee Lenker

I'm no NCIS expert, but I do think that Robbie Amell bears a decent resemblance to young Mark Harmon and seems like he's at the right juncture in his career for another network show. —Wesley Stenzel

With The Rookie: Feds caput on ABC, Zegers needs another outlet to showcase his federal agent skills. Plus, he could pass for a young Harmon. —MLL

Never have I ever seen an episode of NCIS, and Jaren Lewison was the first young TV actor I could think of who's buff enough to look like he just went through special forces training or whatever NCIS people do. On this show that would actually make sense for his character. —Jillian Sederholm

Chris Zylka also has a young Mark Harmon's jawline. I have no other reason, but he really does look like his son (even more so than Harmon's actual son and the show's EP, Sean Harmon). —SB

Courtney Culbreath/Getty Images

Sure, sure, Lawrence is a star football player for the Jacksonville Jaguars, hungry for a Super Bowl ring. But Harmon also got his start as a star QB (at the college level, for UCLA), and there's something about Lawrence's hair that makes us feel like he could sell it. —MLL

Straight off burning up the screen — literally — on Gen V, Patrick Schwarzenegger has the looks, charm, and moxie (not to mention last-name recognition) to play a young Gibbs. Although, truth be told, could we not just divert all this young Mark Harmon casting energy toward willing a Summer School reboot into existence instead? —Dalton Ross

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