'Return of King' EXO, Regular 6 'obsession' Sehun Teaser Image Revealed Topic on November 14, 2019 About EXO Exo is a South Korean-Chinese boy band based in Seoul that was formed by SM Entertainment in 2011 and debuted in 2012. The group consists of nine members: Xiumin, Suho, Lay, Baekhyun, Chen, Chanyeol, D.O., Kai and Sehun.  Wikipedia