Lee Chilld's Jack Reacher books, on which the Amazon show is based, are written as standalone adventures that just so happen to be set within the same continuity. They're intended to be read in any order, so each installment often has a flood of fresh introductions. Amazon's adaptation doesn't follow quite the same formula as the source material, but it certainly comes very close in of the attrition rate of its characters and the semi-anthological storylines.

As a result of Reacher's relative adherence to Child's blueprint, very few of the Reacher season 2's ending does leave the door open for certain stars to come back to the story. However, as an adaptation of Persuader, the seventh book in Child's series, Reacher season 3 has little use for most of the show's past actors. Interestingly, that hasn't completely prevented Amazon from recalling certain figures and deviating from the source material.

Alan Ritchson As Jack Reacher

Date Of Birth: November 28, 1982

• Active since: 2006

Actor: As Reacher's leading man, Alan Ritchson is the only actor who is really needed for the show to continue each year. Known for playing physically strong (and occasionally comedic) characters, Ritchson's casting as Reacher's titular figure led to a resurgence in his movie career. Alongside the Amazon project, Ritchson starred as Aimes in 2023's Fast X, Ed in 2024's Ordinary Angels, and alongside Henry Cavill in 2024's The Ministry of Ungentlemanly Warfare. Earlier in his career, notable roles included Aquaman in four episodes of Smallville, and Thad Castle in 39 episodes of Blue Mountain State.

Character: After leaving behind most of the surviving of the 110th Special Investigations Unit in Reacher season 2, Ritchson's character once more begins the third run of episodes as a wandering lone wolf. That being said, his talent for leadership and strong skill set means he's pretty much always capable of rounding up as much help as he needs whenever he runs into trouble. Reacher is often the linchpin in most plans, although season 3 sees him operating in an even smaller group of allies than usual, and it's not his plan either.

Maria Sten As s Neagley

Date Of Birth: October 29, 1989

• Active since: 2012

Actor: Sten returns to the core Reacher cast in season 3, making her the only actor other than Alan Ritchson to boast this plaudit. Before being cast as s Neagley, the Danish-born actress didn't have many notable acting credits. That being said, she did still have quite a lot of experience. The 2008 Miss Denmark Universe popped up briefly in 2015's Straight Outta Compton in an uncredited role, then went on to appear in several smaller projects before entering the DC universe as Liz Tremayne in 9 episodes of the now-canceled Swamp Thing in 2019.

Character: Neagley served with Reacher in the 110th, and the pair have maintained an on-again/off-again friendship/camaraderie since resuming civilian life. What's perhaps the most interesting thing about Neagley in Reacher season 3 is her presence in any capacity. Neagley isn't in Persuader, so including her in the show at this point is a huge deviation from the source material. However, it also lends a stronger sense of consistency that the books intentionally lack. It was announced after Reacher season 2 that a Neagley spinoff show had been greenlit.

Sonya Cassidy As Susan Duffy

Date Of Birth: 1986/1987

• Active since: 2009

Actor: A relative unknown in the US, Sonya Cassidy has carved out an impressive career for herself in her native UK. Although not a household name in either nation, Cassidy has been working steadily since 2009 in a mix of period dramas and sci-fi projects. Reacher is her biggest role to date, and she has worked very hard to get there. She appeared as Hester in 8 episodes of the Isaac Asimov-inspired Humans in 2016, but her most-reprised role remains Liz Dudly in Lodge 49.

Character: Susan Duffy is from the pages of Lee Child's Persuader. She's a DEA agent who recruits Ritchson's character for assistance in taking down a criminal organization, as Reacher has skin in the fight too. The two become romantically entangled as the story progresses. This is nothing new for Reacher, as the show's title character lives a nomadic existence. Therefore, he tends to find new love interests as he wanders.

Olivier Richters As Paulie

Date Of Birth: September 5, 1989

• Active since: 1991

Actor: Olivier Richters is a Dutch bodybuilder who has also been acting on a regularly sporadic basis since 1991. Coming in at over 7 feet tall, Richters is cast often in enforcer roles, and Reacher season 3 keeps that trend alive. His acting career started to really pick up steam in 2020 when playing Duncan in Gangs of London started to bring about bigger and bigger roles. He stepped into the MCU as Ursa in 2021's Black Widow and played Hauke in 2023's Indiana Jones and the Dial of Destiny​​​​​​. He also played Krom in 2024's Borderlands.

Character: Paulie is one of the biggest threats to Ritchson's character in Reacher season 3, if not the biggest. Previous Reacher villains have fallen very short of the main character's physicality, but Paulie sures Reacher in both height and physical strength. He's one of the key figures in the criminal organization that Reacher is infiltrating, and the Reacher season 3 trailer quickly revealed the two would come to blows.

Reacher Season 3's ing Cast & Characters

The show's third season brings in many other roles of varying importance to move the story along

Amazon's take on Persuader is filled with characters from the book, but also new characters who have been created especially for the show. While Reacher season 3 is very similar to the source material, the difference in medium means there have had to be additions and alterations made, and those tweaks ultimately caused new characters to arise organically. They don't all have a huge impact on the larger story, and some are only there for worldbuilding purposes, but they all play at least a small role in Reacher season 3.

• Johnny Berchtold as Richard Beck
• Roberto Montesinos as Guillermo Villanueva
• Brian Tee as Quinn
• Anthony Michael Hall as Zachary Beck
• Daniel David Stewart as Steven Elliot
• Ronnie Rowe Jr. as John Cooper
• Donald Sales as Chapman Duke
• Caitlin McNerney as Annette
• Helen Taylor as Agnes
• Victor Ermantis as Carl
• Simon Northwood as Rusty
• Owen Roth as Warrant Officer Powell
• Tal Zimmerman as Jerry
• Manuel Rodriguez-Saenz as Angel 'Angel Doll' Dole
• Milton Barnes as Sklar
• Mick Betancourt as Clark
• Sean James Lee as Bellinger
• Brandon Knox as Officer Edmonds
• Jim Annan as Officer Grunert
• Connor MacMahon as Lead Townie
• Maria Robinson as Dominque Kohl
• Brendan Fletcher as Harley
• Andreas Apergis as General Leon Garber
• Robert Bazzocchi as Private Anthony 'Tony' Frasconi
• Farhang Ghajar as Safwan Qasim
• Johnathan Sousa as Specialist Roland Gorowski
• Jay Wong as General Matsuda
• Joshua Obra as Warner
• Sebastian MacLean as Howatt
• Christopher Omar as Tank
• Drew Nelson as Greene
• Aleks Paunovic as Taktarov
• Aury Barnett as Karns
• Andrew Moodie as Frank
• Storm Steenson as Teresa Daniel
• Greg Bryk as Darien Prado
• Mark Taylor as Wolcott
• Stephen Bogaert as Doug Sears
• Bryan Edwards as Latham
• Khalid Karim as Waleed
• Michael Rhoades as Costopoulos
• Ankit Kumar as Azeen