Marvel Studios’ Thunderbolts* brings together a crew of MCU misfits—operatives, supersoldiers, and morally gray “assets”—who get pulled into the same orbit when Valentina Allegra de Fontaine sets the board and forces them into a mission that’s more high-stakes (and personal) than they signed up for.
Below is a cast-and-character guide to who’s who in Marvel’s antihero team-up.
Thunderbolts cast and characters at a glance
Florence Pugh
Plays: Yelena Belova
Yelena is the film’s emotional anchor and, by Marvel’s own framing, a key figure pushing the team forward. She first arrived in the MCU via Black Widow and has since become one of the franchise’s most popular newer leads.
Sebastian Stan
Plays: Bucky Barnes / Winter Soldier
Bucky is the most battle-tested member of the lineup—and one of the few who’s lived both sides of the “hero/villain” line at the highest stakes. In Thunderbolts*, Marvel positions him in a more public-facing role than fans might expect, with Bucky trying to serve differently than he used to.
David Harbour
Plays: Alexei Shostakov / Red Guardian
Introduced in Black Widow, Alexei brings big personality (and a lot of baggage). Marvel has described him as a comedic heartbeat of the group—someone who can crack jokes while still carrying the bruises of his past.
Wyatt Russell
Plays: John Walker / U.S. Agent
Walker debuted in The Falcon and the Winter Soldier as the government’s chosen “replacement” Captain America—and the fallout from that saga still defines him. In Thunderbolts*, he’s still volatile, still proud, and still trying to prove he belongs in the room.
Hannah John-Kamen
Plays: Ava Starr / Ghost
Ghost last appeared in Ant-Man and the Wasp, where her phasing instability was central to her story. Marvel’s current description frames her as more in control now—still risky, but less desperate—which changes how she fits into a team dynamic.
Olga Kurylenko
Plays: Antonia Dreykov / Taskmaster
Taskmaster—first seen in Black Widow—rounds out the core group of operatives who feel more like highly skilled assets than “caped heroes.” Marvel’s official film page lists her among the key antiheroes assembled for the mission.
Julia Louis-Dreyfus
Plays: Valentina Allegra de Fontaine
Val is the scheming CIA director pulling strings behind the scenes, and the reason this roster ends up in the same place at the same time. If the Thunderbolts feel like a “team” at all, it starts as something engineered—then tested.
Lewis Pullman
Plays: Robert “Bob” Reynolds / Sentry (and the Void)
Bob is the wildcard—and the power curve-breaker. Marvel has directly tied him to the identity of Sentry, with a darker alter ego known as the Void, positioning him as a pivotal figure in the film’s threat level and psychological stakes.
Geraldine Viswanathan
Plays: Mel (Valentina Allegra de Fontaine’s assistant)
Mel is part of Val’s inner circle, close to the decision-making that drives the plot. While she isn’t one of the “field” antiheroes, her proximity to Val matters—because in movies like this, the person near the decision point often isn’t the one pulling it.
Chris Bauer
Plays: Undisclosed role
Marvel’s official film listing confirms Bauer is in the cast, but his character details have not been clearly specified on Marvel’s main movie page.
Wendell Pierce
Plays: Undisclosed role
Pierce is also confirmed on Marvel’s official cast list, with character specifics not detailed on that same primary listing.
