Moon Byul Yi, known simply as Moon Byul, is a South Korean singer, dancer, actress and member of MAMAMOO (마마무). She graduated from Wonmi High School and later obtained a bachelor's degree in K-Pop from Baekje Arts University.

She made her debut in June 2014 as the group's rapper and performer with their first mini-album, "Hello". They are highly regarded in the industry for their talent and ability to cross multiple genres, with their music going from retro, jazz, and R&B concepts in their early years to more contemporary hip-hop, as well as emotional ballads. The group is managed by RBW (알비더블유)

In July 2017, she was part of the TV show "Idol Drama Operation Team" and later became part of the project group GIRLS NEXT DOOR (옆집소녀) alongside 6 other female idols. They released the single "Deep Blue Eyes" and acted in their own drama called “Let’s Only Walk The Flower Road”.

She made her debut as a solo artist in May 2018 with the single "Selfish".

As both she and Solar have remained in RBW, the company decided to pair them up in the group's first sub-unit, MAMAMOO+ (마마무+), debuting in August 2022 with their first single, "Better".

(Source: kisskh) Edit Biography