Answer
The answer is Baekhyun. Exo-CBX is a sub-unit of the South Korean-Chinese boy band Exo, formed by SM Entertainment in 2016. It consists of three members: Xiumin, Baekhyun, and Chen. The sub-unit's name is derived from the combination of the first letters of their names (CBX). Exo-CBX has released two studio albums, two mini-albums, and several singles.