YouTube vs EXO Up on 'Bulletproof' is Netflix on May 08, 2018 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