EXO-K (엑소) is a sub-group of EXO (they used to perform as two separate sub-groups EXO-K and EXO-M). The sub-group consists of: Suho, Baekhyun, Chanyeol, D.O, Kai, and Sehun. This unit is currently inactive since 2016 since three of the Chinese members left (Kris, Luhan, and Tao from EXO-M). The ‘K’ in EXO-K stands for Korean. They debuted under SM Entertainment on April 8th, 2012 with the Korean Version of ‘Mama‘.