Moon Byul-yi, better known by the mononym Moonbyul, is a South Korean rapper, singer, songwriter and actress. She is the main rapper of South Korean girl group Mamamoo. In May 2018, Moonbyul made her debut as solo artist with releasing digital single, “Selfish”.
Ahn Hye-jin, better known by her stage name Hwasa, is a South Korean singer and rapper signed under RBW Entertainment. She is best known as the vocalist of South Korean girl group Mamamoo. In February 2019, Hwasa made her debut as a solo artist with her digital single “Twit”.