On January 30, 2012 Baekhyun was formally introduced as a EXO-K member with prologue single 'What Is Love' is only sung by him and his bandmate D.O. On February 2012 Baekhyun appeared in EXO trailer. Baekhyun usually takes a shower with fellow member, Sehun after training. He shares room with Chanyeol. His roommate Chanyeol said that Baekhyun yelps like a dog like 40 times before falling asleep. Baekhyun had personality that bright, cheerful, and kind. He loves to socialize and befriend people. His ideal type is woman with full of charms. He also had motto 'Life is Only a Path Full of Efforts'.