Acting At age 17, Rheon joined the
Welsh language soap
Pobol Y Cwm, in which he originated the role of Macsen White, but later left to train at the
London Academy of Music and Dramatic Art. His first notable stage part came in
Eight Miles High, which was staged in 2008 at the
Royal Court Theatre in
Liverpool. Also in 2008, he was cast as the haunted Moritz Stiefel in the
London production of the
Tony Award-winning rock musical
Spring Awakening. On 20 December 2011, Rheon announced via Twitter that he had left the show, along with fellow cast member
Antonia Thomas. In 2011, he also appeared in the final episode of
Secret Diary of a Call Girl. In 2011, he was nominated for a Golden Nymph in the "Outstanding Actor – Drama Series" category for his role in
Misfits. Rheon also made two guest appearances as the character Ben Theodore in
Simon Amstell's comedy ''
Grandma's House''. In September 2014, Rheon joined the cast of BBC One's
Our Girl as Dylan "Smurf" Smith. In 2017, it was announced that Rheon had been cast in ABC's
Inhumans series. Rheon played
Mötley Crüe guitarist
Mick Mars in the 2019 film
The Dirt. In 2021 he starred in Sky Cinema's 'A Christmas Number One'. In 2023 he filmed the BBC television feature
Men Up, about the first clinical trials for the drug
Viagra that took place in Swansea in 1994.
Music Songwriting and singing since the age of 16, Rheon was lead singer in The Convictions until leaving the band to pursue his acting career. In 2010, he recorded his first solo work,
Tongue Tied EP, at
RAK Studios in London, produced by
Jonathan Quarmby and
Kevin Bacon. The EP, a four track release with acoustic guitar and voice, was released digitally in June 2010. He returned to RAK Studios, in April 2011, to record his second EP
Changing Times, again produced by Quarmby and Bacon, with the addition of three backing musicians.
Changing Times was released on 10 October 2011. On 7 April 2013, Rheon released his third EP
Bang! Bang! and on 9 April 2013, released the music video for the title track. Rheon recorded his first album,
Dinard, at RAK Studios in London and Tŷ Cerdd Studios in Wales. The album was released in April 2015 and produced by James Clarke and Jim Unwin. A "self-funded collection of emotive folk-pop songs recorded over several years", the album's title refers to
Dinard, a town in Brittany, France, where Rheon met Zoë Grisedale, who was his girlfriend at the time of the album's release. On July 3, 2025, Rheon released his second album. Titled ''I Just Wish I'd Never Gone To Space
, the album is produced by Chris Hyson and features a first single named Forward Motion''. ==Personal life==