CBS’s FBI is back with its thrilling eighth season, and the stakes have never been higher. With new threats, personal struggles, and emotional storylines that hit closer to home than ever, the hit procedural drama continues to evolve — all thanks to its talented cast.
Whether you’ve followed FBI since the pilot or you’re just jumping in this season, here’s your full guide to the Season 8 cast — who they play, how their characters have changed, and where you’ve seen them before.
Missy Peregrym as Special Agent Maggie Bell
At the center of FBI is Special Agent Maggie Bell, portrayed by Missy Peregrym, who has been with the show since its 2018 debut. Maggie is the moral compass of the team — fierce, compassionate, and unrelenting when it comes to justice.
After her harrowing near-death experience from a sarin gas attack in Season 4 and her emotional return in Season 5, Maggie has continued to evolve. Season 8 finds her facing her most personal challenge yet: maintaining balance between her duty to the Bureau and the toll it takes on her personal life.
Peregrym, best known for her role as Officer Andy McNally in Rookie Blue, has become one of network television’s most respected leads. Her grounded portrayal of Maggie gives the show both heart and grit.
“Maggie’s strength comes from her empathy,” Peregrym told TV Guide. “She’s seen so much pain — but she never lets it harden her.”
Zeeko Zaki as Special Agent Omar Adom “OA” Zidan
Every great lead needs an equally strong partner, and Maggie’s bond with OA Zidan, played by Zeeko Zaki, remains one of FBI’s core foundations.
In Season 8, OA faces a darker arc — haunted by a botched operation overseas and the moral fallout of choices made under pressure. The writers are delving deeper into OA’s background as a former Army Ranger and Muslim-American agent, exploring how his identity shapes his pursuit of justice.
Born in Egypt and raised in Pennsylvania, Zaki made history as one of the first Arab-American actors to lead a U.S. network procedural. His previous credits include Six and Valor, but it’s FBI that turned him into a household name.
“OA’s fighting to reconcile who he is with what he’s seen,” Zaki said. “That’s what makes him human — and what makes this season so powerful.”
John Boyd as Special Agent Stuart Scola
John Boyd has been part of FBI since Season 2, and his role as Stuart Scola has grown into one of the show’s most layered performances.
Scola began as a confident, by-the-book agent with a dry wit and sharp intellect. But after losing his partner and romantic interest, Nina Chase, his character entered a more introspective phase. Season 8 pushes him even further as he confronts grief, fatherhood, and an uneasy alliance with newcomer Eva (Juliana Aidén Martinez).
Boyd, who previously starred in Bones and 24: Legacy, brings nuance to a character constantly walking the line between duty and emotion.
“Scola’s learning that being right isn’t always the same as being good,” Boyd told Entertainment Weekly. “He’s evolving — and sometimes that evolution hurts.”
Alana De La Garza as Special Agent in Charge Isobel Castille
No one commands a room quite like Isobel Castille, the team’s no-nonsense leader played by Alana De La Garza.
In Season 8, Isobel’s authority is tested like never before. Between managing inter-agency conflicts and navigating the fallout from controversial FBI policies, she faces mounting pressure that threatens to compromise her leadership — and her loyalty to her team.
De La Garza’s impressive résumé includes roles in Law & Order, Criminal Minds: Beyond Borders, and CSI: Miami. Her portrayal of Isobel balances poise and vulnerability, making her one of television’s most quietly commanding figures.
“Isobel carries the weight of every decision,” De La Garza said. “She’s not just a boss — she’s the glue that holds the team together.”
Katherine Renee Kane as Special Agent Tiffany Wallace
After joining the cast in Season 3, Katherine Renee Kane quickly became a fan favorite as Tiffany Wallace, a tough, quick-thinking agent with a deeply personal connection to justice.
This season, Tiffany’s story takes a more emotional turn. Haunted by the death of her former partner, Hobbs, and grappling with systemic issues within the Bureau, she begins questioning her place in law enforcement.
Kane’s background in theater gives her performance a raw intensity. She previously appeared in Orange Is the New Black and Extraordinary Attorney Woo (U.S. adaptation pilot) before landing her breakout role in FBI.
“Tiffany’s realizing that strength doesn’t mean silence,” Kane explained. “Sometimes it means speaking up — even when it costs you.”
Jeremy Sisto as Assistant Director Jubal Valentine
A fan-favorite since day one, Jeremy Sisto continues to bring depth and heart to Jubal Valentine, the fast-talking operations chief who keeps the team grounded.
Season 8 finds Jubal at a crossroads, juggling his demanding job with his responsibilities as a father and recovering alcoholic. His struggle with vulnerability remains one of the show’s most relatable arcs.
Sisto, known for Six Feet Under and Law & Order, plays Jubal with the perfect blend of intellect and exhaustion — a man whose optimism is constantly tested but never extinguished.
“Jubal is everyone’s anchor,” Sisto said. “He’s the reminder that no matter how broken things get, you can still keep moving forward.”
Juliana Aidén Martinez as Analyst Eva Martinez
The breakout newcomer of Season 8, Juliana Aidén Martinez brings intrigue and intensity as Eva, a tech analyst whose past ties to the criminal organization Forefront have put her under a harsh spotlight.
After her explosive introduction, Eva has become one of the most discussed characters of the season — torn between redemption and suspicion.
Martinez, known for Griselda and The Cleaning Lady, says she’s honored to join such an established ensemble.
“The cast welcomed me with open arms,” she said. “FBI isn’t just about cases — it’s about humanity, and I’m proud to explore that.”
The Ensemble Behind the Action
Part of what makes FBI so enduring is its cast chemistry — something that can’t be faked. The rapport between Peregrym and Zaki anchors the show, while the ensemble dynamic reflects a team that feels like a real family.
Showrunner Rick Eid credits the actors with keeping the series emotionally fresh. “Procedurals can become formulaic,” he said, “but this cast refuses to let that happen. They bring heart and authenticity to every episode.”
From tense interrogations to quiet moments of vulnerability, FBI thrives on its ability to humanize the people behind the badge.
Where You’ve Seen Them Before
Many of the cast members come from long careers in film and television:
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Missy Peregrym: Stick It, Heroes, Rookie Blue
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Zeeko Zaki: Valor, Six, 24: Legacy
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John Boyd: Bones, Argo, 24: Legacy
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Alana De La Garza: Law & Order, Forever, Criminal Minds: Beyond Borders
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Jeremy Sisto: Clueless, Six Feet Under, Suburgatory
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Katherine Renee Kane: Broadway and Off-Broadway theater, FBI (breakout)
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Juliana Aidén Martinez: Griselda, The Cleaning Lady, Prodigal Son
Each performer brings something distinct — but together, they form one of network TV’s strongest ensembles.
The Bottom Line
With a cast this talented and cohesive, it’s no wonder FBI continues to dominate primetime. Season 8 proves that even after years on the air, the show still has new stories to tell — and new sides of its characters to explore.
As Missy Peregrym summed it up:
“We’re not just chasing criminals. We’re exploring people — their fears, their hopes, their flaws. That’s what makes FBI matter.”
