Kim Dong Hyun, better known as Donghyun, is a South Korean singer, music producer, and actor under Brand New Music. He is the visual of the boy group AB6IX and a member of its project unit, MXM. Donghyun is also a member of the one-time project group YDPP and the fictional band LUNA from the 2021 drama 'Let Me Be Your Knight.'
In 2017, as a trainee, Donghyun participated in the second season of the hit survival show 'Produce 101' along with the other four trainees from his agency. He ranked 28th overall, rendering him unable to debut as a member of Wanna One. Despite this, his appearance on the show opened different opportunities for him. In the same year, Donghyun and Lim Young Min debuted as the duo MXM with the mini album 'Unmix.' He also became a member of his agency's pre-debut group, BRANDNEWBOYS, which will later be called AB6IX.
Moreover, on April 5, 2018, Donghyun debuted in a project boy group between Starship Entertainment and Brand New Music called YDPP with the digital single "Love It Live It."
Besides singing, Donghyun also debuted as an actor through the web drama "Monchouchou Globalhouse."