Twice (Hangul: 트와이스; Japanese: トゥワイス) is a South Korean girl group formed by JYP Entertainment through the 2015 reality show Sixteen. The group is composed of nine members: Nayeon, Jeongyeon, Momo, Sana, Jihyo, Mina, Dahyun, Chaeyoung, and Tzuyu. The group debuted on October 20, 2015, with the extended play (EP) The Story Begins.

VIXX (Korean: 빅스 pronounced "vicks"; acronym for "voice, visual, value in excelsis") is a South Korean boy band formed by Jellyfish Entertainment through the 2012 reality show MyDOL. The group is composed of six members: N, Leo, Ken, Ravi, Hongbin and Hyuk. They are predominantly known as a concept or performance group whose music, lyrics, choreography, and overall stage performances are crafted together to tell a story or concept.

Wanna One (Hangul: 워너원) is a South Korean boy band formed by CJ E&M through the 2017 survival competition Produce 101 Season 2. The group is 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 and will be promoting until January 2019 under Swing Entertainment and CJ E&M.