James Metcalfe Campbell Bower is an English actor, musician, and model known for his work across fantasy, horror, and historical productions. He gained international recognition through roles in Sweeney Todd: The Demon Barber of Fleet Street, The Twilight Saga, Harry Potter and the Deathly Hallows – Part 1, The Mortal Instruments: City of Bones, and the Netflix series Stranger Things, where his performance received widespread acclaim. Alongside his acting career, he is also an accomplished musician, serving as the lead vocalist of the rock band Counterfeit. His versatility across film, television, and music has made him a prominent figure in contemporary popular culture.