Kim Dong Hyun (김동현) is a South Korean singer under Brand New Music. He participated in Produce 101 Season 2 but was eliminated before the finale. He along with Lim Young Min debuted together as MXM, a project unit of the upcoming boy group BRANDNEW BOYS.
He is also a member of Starship and Brand New Music’s project group YDPP.
Source: kpop wiki