Kim Sung Hyun was a contestant on 2016 reality boy group unit survival show BOYS24. He was a lead rapper and member of Unit Black, the first promotional unit of BOYS24. He is a vocalist, rapper, maknae, and member of IN2IT, the final group of BOYS24. He is a contestant on 2019 boy group survival reality show Produce X 101. He was included in Unit Red during the BOYS24 survival show and eliminated in the final stage (episode 8), but revived from fans vote. He was selected as one of the BOYS24 group members and added to Unit White (first genera…