Barnes gained international recognition for his portrayal of Prince Caspian in The Chronicles of Narnia film series, starting with The Chronicles of Narnia: Prince Caspian (2008) and followed by The Chronicles of Narnia: The Voyage of the Dawn Treader (2010). His charismatic performance established him as a rising star in Hollywood.
Barnes has since demonstrated his range in various genres, including his role as Dorian Gray in Dorian Gray (2009), Tom Ward in Seventh Son (2014), and Logan Delos in the acclaimed HBO series Westworld (2016-2020). More recently, he starred as General Kirigan in the Netflix fantasy series Shadow and Bone (2021-present), which has garnered him a new wave of fans and critical acclaim.
In addition to his acting career, Barnes is also a talented musician and has released music, including his debut EP Songs For You in 2021. Known for his charm, depth, and dedication to his craft, Barnes continues to be a prominent figure in the entertainment industry.