REX a.k.a Raptor is a Vietnamese rapper, he has been active since 2016 until now. As one of the member present in the official lineup from the early days of GERDNANG’s establishment. He is also known as a rapper with impressive multi-rhyming techniques and the most unusual way of exploiting topics different from his teammates. 
 Born on March 5, 1999, Rex is the eldest in a family that is not very well off. His childhood was associated with Rock music with many genres from Country, Nu-Metal, Pop Rock, Thrash, Punk,.. and until now, he still keeps the habit of listening to this music whenever he has free time to improve the mood. Besides, he is also a student who is not very exemplary when he skips school many times even though his academic results always stand at a high position in the class. 
 He was exposed to street culture from a very early age when the background and definition of hip-hop information was still quite rudimentary in Vietnam. Starting from spending more time on the street, he learned and experienced more from his brothers in typical communities of Graffiti, BMX, Skate,...and finally Rap. The first songs were released in a small EP consisting of 6 songs but were later deleted on online music platforms, he retired to Da Lat in Lam Dong province, Vietnam.