Doh Kyung-soo, known by his stage name D.O., is a South Korean singer and actor. He is a member of the South Korean boy band Exo. Apart from his group's activities, D.O. has starred in various television dramas and movies such as It's Okay, That's Love, My Annoying Brother, Along with the Gods: The Two Worlds, 100 Days My Prince, Swing Kids, and Bad Prosecutor. He debuted as a soloist on July 26, 2021, with his first extended play Empathy.