Roots of X1

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.

Im Chang-kyun, known by the stage name I.M or mononymously as Changkyun, is a South Korean rapper, singer, songwriter, and producer. He is a member of the South Korean boy group Monsta X under Starship Entertainment. He made his solo debut with the EP Duality in 2021.

Cravity is a South Korean boy band under Starship Entertainment. The group is composed of nine members: Serim, Allen, Jungmo, Woobin, Wonjin, Minhee, Hyeongjun, Taeyoung, and Seongmin. They debuted on April 14, 2020, with their extended play, Season 1. Hideout: Remember Who We Are.

Up10tion is a South Korean boy band formed by TOP Media in 2015. The group currently consists of seven members: Kuhn, Kogyeol, Bitto, Sunyoul, Gyujin, Hwanhee and Xiao. The group debuted with their first extended play Top Secret. In 2017, they made their Japanese debut with EP ID. Originally as ten, Jinhoo, Lee Jin-hyuk and Kim Woo-seok departed from the group on February 28, 2023.

Jo Dong-rim, better known by the stage name Mad Clown, is an American rapper, songwriter, and record producer. He debuted with the single "Luv Sickness" in 2008 and released his first extended play, Anything Goes, in 2011. He broke into the mainstream following the release of "Stupid in Love," his hit 2013 collaboration with Soyou of the girl group Sistar. He has since released the extended plays Ferocity (2014), Piece of Mine (2015), Love is a Dog From Hell (2017), and 0 (2020).

Wanna One (Korean: 워너원) was a South Korean boy band formed by CJ E&M through the second season of Produce 101. The group was composed of eleven members: Kang Daniel, Park Ji-hoon, Lee Dae-hwi, Kim Jae-hwan, Ong Seong-wu, Park Woo-jin, Lai Kuan-lin, Yoon Ji-sung, Hwang Min-hyun, Bae Jin-young, and Ha Sung-woon. The group debuted on August 7, 2017, under Swing Entertainment and CJ E&M. Their contract ended on December 31, 2018, but their final activity as a group was their single album B-side released on January 27, 2022.

Onyx is an American hardcore hip hop group from New York City, formed in 1988 by Fredro Starr, Suavé and the late Big DS. Sticky Fingaz joined the group in 1991.