Jeong Ji-won, better known by the stage name Wonstein (Korean: 원슈타인) is a South Korean rapper and singer. He debuted in 2018 with the single "Spider Web" under the label Beautiful Noise. He achieved mainstream popularity after participating on the hip-hop competition show Show Me the Money 9 in 2020. The following year, he appeared on the reality show Hangout with Yoo, through which he became a member of the chart-topping R&B supergroup MSG Wannabe.

Kim Yoon-jin, known professionally as Mirani (Korean: 미란이), is a South Korean rapper and songwriter. She first garnered attention when she appeared on the rap competition TV show Show Me the Money 9 in 2020. She released the single "VVS" with rappers Munchman, Khundi Panda, and Mushvenom on the show which peaked at number 1 on the Gaon Digital Chart and won Hip-hop Track of the Year at the Korean Hip-hop Awards.