Kim Jung Woo is a singer who joined SM through their weekly audition and trained for over three years. He is the main vocalist and the lead dancer of the boy group NCT U as well as the lead vocalist and dancer of NCT 127. His sister Kim Min Ah is an actor and model. Jung Woo made his first public appearance in Super Junior Yesung’s comeback music video “Paper Umbrella.” He made his debut with the sub-unit NCT U with the first full album NCT 2018 Empathy's title song "Boss." On April 17, 2023, Jung Woo and his fellow members Do Young and Jae Hyun debuted in the subunit DoJaeJung.