
Alexander Stephen Hassell (born 7 September 1980) is an English actor. He is co-founder of The Factory Theatre Company. Hassell was born in Southend, England, the youngest of four, to a vicar. He trained at the Central School of Speech and Drama after completing GCSE and A-Level courses at Moulsham High School, in Chelmsford, Essex.
He has appeared in a number of stage roles, most recently as Hal in Henry IV Parts I and II, and Henry in Henry V, for the Royal Shakespeare Company. His first Hollywood role was in George Clooney's Suburbicon (2017), and later that year he appeared in his first major television role in the BBC adaptation of Jessie Burton's The Miniaturist, which first aired on Boxing Day. He also appeared as Translucent in the first season of The Boys (2019) on Amazon Prime Video, and played Vicious in Netflix's Cowboy Bebop in 2021.

Wasteman
2026 · as Paul

Cold Mountain
2003 · as Orderly

Violent Night
2022 · as Jason

The Tragedy of Macbeth
2021 · as Ross

Young Woman and the Sea
2024 · as Harry Horlick

Suburbicon
2017 · as Louis

The Red Sea Diving Resort
2019 · as Max Rose

Anonymous
2011 · as Spencer

Locked In
2023 · as Dr. Robert Lawrence

Big Thunder
2013 · as Abel White

The Miniaturist
2017 · as Johannes Brandt

Boudica
2003 · as Roman Officer

The Isle
2019 · as Oliver Gosling

Miss in Her Teens
2014 · as The Player

The Sickhouse
2008 · as Nick

Shakespeare Live! From the RSC
2016 · as Various

RSC Live: Henry IV Part 1
2015 · as Prince Hal

Health, Wealth & Happiness
2017