Lee Joon-Young was born in Seoul, Korea, on January 22nd, 1997. In 2014, he joined the boy band U-KISS as their main rapper under the stage name Jun. In 2017, he became more widely known after playing the role of Lee Soo Gyum in "Avengers Social Club." In the same year, he competed on the KBS survival talent show "The Unit" and won first place. He joined the temporary group UNB as the main vocalist. He has previously won Best New Actor awards at the 45th MBC Drama Awards and the 30th SBS Drama Awards. His representative works include "Imitation," "D.P.," and more.