Roots of ONF

Cho Seung-youn, known professionally as Woodz (우즈), is a South Korean singer-songwriter, rapper, and record producer. He rose to fame as the main rapper of the South Korean-Chinese boy band Uniq, formed by Yuehua Entertainment in 2014, before co-founding the musical collectives M.O.L.A in 2015 and Drinkcolor in 2016. He co-founded his personal production team, Team HOW, in 2018. He is a former member of the South Korean boy group X1.

B1A4 (Korean: 비원에이포) is a South Korean boy band formed by WM Entertainment. The group debuted on April 23, 2011, with the single "O.K" from the EP Let's Fly, after being introduced to the public through a webtoon. They have released nine studio albums and seven EPs, as well as four compilation albums. The group had considerable commercial and critical success in both the Korean and Japanese markets. They have also toured in the United States.