Kim Dong-han (born July 3, 1998), also known as Donghan, is a South Korean singer, songwriter, and actor. He first gained public attention in 2017 as a contestant on the reality survival show Produce 101 Season 2, where he finished in 29th place. Despite not making the final group Wanna One, Kim became a member of JBJ, a fan-voted project group formed with other eliminated contestants. JBJ debuted in October 2017 with the EP Fantasy and enjoyed a seven-month career before disbanding in April 2018 after their contract expired. Kim pursued a solo career following JBJ's disbandment, debuting with his EP D-Day in June 2018. The EP's lead single, "Sunset," earned him his first music show win on The Show just a week after its release. Kim continued his solo success with the releases of two more EPs: D-Night in October 2018 and D-Hours AM 7:03 in May 2019. He also made his acting debut in the 2020 web series Trap and appeared in the musical Iron Mask. In October 2020, Kim debuted as a member of the boy band WEi, releasing their first EP Identity: First Sight.