John Barrowman, is a Scottish-American actor, singer, presenter, and comic book writer. He gained fame for his role as Captain Jack Harkness in Doctor Who and its spin-off Torchwood. Barrowman has also starred in the Arrowverse as Malcolm Merlyn and has a successful career in musical theatre, with roles in productions like Anything Goes and The Phantom of the Opera. His dynamic presence and versatile talent have made him a standout in both television and theatre.