Stage name: Moonbyul [92'liner]
Birth name: Moon Byul-yi
Nationality: South Korean
Years active: 2018 - present
Entertainment: RBW– She has 2 younger sisters
– She originally auditioned to be a vocalist but changed to become a rapper instead.
– She received attention for resemblance to BTOB's Minhyuk and EXO's Xiumin.
– She wrote her rap for "Piano Man" and helped write her rap for "Mr. Ambiguous" along with Hanhae of Phantom.
– She created the choreography for "Mr. Ambiguous".
– Her nickname is "Black Hole" because she tends to sweat a lot.
– She wants to collaborate with Verbal Jint.
– When MAMAMOO participated to Immortal Songs, she wrote the rap parts by herself as they were not originally there.
– She owns 4 dogs, Daebak, Haengeoon, Keongang and Janggu.
– She, along with Solar, aren't good with roller coasters/high rides.
– She, along with EXID's Hani, BTS's Jin, VIXX's Ken and B1A4's Sandeul, have a group chat for 92-liners.
– She used to share a room with Whee In. (After Um Oh Ah Yeh era all of them moved out and now have their own places.)
– Moonbyul appeared on "King of Masked Singer" as Swan.
– She is close to Red Velvet's Seulgi and collaborated with her for a song called "Selfish".
– She was, alongside other 6 female idols, in "Idol Drama Operation Team" tv program. They created a 7 members girl group, called Girls Next Door, which debuted on July 14, 2017.