2011–2021: Early roles After graduating from LAMDA, Quinn was cast in the
BBC One series
Dickensian as main character
Arthur Havisham. He starred in the 2017 four-part series
Howards End as Leonard Bast, a young bank clerk, opposite
Hayley Atwell. That same year, he starred in the short film
KIN, and appeared in a
season 7 episode of the
HBO series
Game of Thrones as Koner, a Stark soldier. Quinn is also known for his work in theatre, appearing on the London stage at the
National Theatre and
Off West End. He was awarded Best Actor in a Studio Production at the 2017
Manchester Theatre Awards for his performance in
Wish List. He was named a 2018
Screen International Star of Tomorrow. In 2020, he appeared in the BBC One series
Strike and the
Mangrove installment of
Steve McQueen's television anthology
Small Axe.
2022–present: Breakthrough, Stranger Things, and Marvel Cinematic Universe In 2022, Quinn gained prominence internationally through his role as
Eddie Munson in the
fourth season of
Stranger Things. He was cast in the role in 2019, with filming for the season taking place in 2021. Quinn was nominated for a
Saturn Award for Best Supporting Actor in a Streaming Series for his role. He later won the
Best Breakthrough Performance Award at the
2023 MTV Movie & TV Awards for his work on
Stranger Things. In August 2022, Quinn signed with
Creative Artists Agency. Quinn narrated the trailer for a reboot of the
Lords of the Fallen video game. He became the official face for the Gris
Dior fragrance in October 2022. At the 2022
Newport Beach Film Festival Honors, Quinn appeared on the
Variety list of 10 Actors to Watch. In November 2022, Quinn was one of
British GQs Men of the Year Honourees. Following his performance in
Stranger Things, Quinn was cast in numerous major studio films. He starred with
Lupita Nyong'o in the horror film
A Quiet Place: Day One, directed by
Michael Sarnoski, which was released in June 2024. He was also cast as
Geta in the historical action film
Gladiator II, directed by
Ridley Scott, which released in November 2024. In 2025, Quinn featured alongside an ensemble cast in
Warfare, a war film written and co-directed by
Alex Garland, and portrayed
Johnny Storm / Human Torch in the
Marvel Cinematic Universe film
The Fantastic Four: First Steps (2025), a role he will reprise in
Avengers: Doomsday (2026) and
Avengers: Secret Wars (2027). Quinn has also been cast as
George Harrison in
Sam Mendes's
four-part biopic of
the Beatles. ==Filmography==