Sullyoon

Seol Yoon-ah, known professionally by her stage name Sullyoon, is a South Korean singer, dancer, and television presenter. Born in Daejeon, South Korea, in January 2004, she developed an interest in performing arts during her childhood, undertaking early training in ballet and modern dance. She attended Hanlim Multi Arts High School in Seoul, where she majored in Broadcasting and Entertainment until her graduation in February 2023. Before entering her career as an idol, she successfully passed auditions for multiple prominent South Korean talent agencies before choosing to sign with JYP Entertainment in 2020.

Sullyoon rose to widespread recognition as a member of the South Korean girl group NMIXX, created under JYP Entertainment's division SQU4D. She was publicly revealed as the group's fourth member in September 2021 through a cover performance video. The group officially debuted on February 22, 2022, with the release of the single album Ad Mare, featuring the lead track "O.O". As a core vocalist and performer for NMIXX, she has participated in all of the group's major music projects, including extended plays such as Expérgo and subsequent studio releases, earning commercial success in South Korea and internationally.

In addition to her activities with NMIXX, Sullyoon has established a presence as a broadcast television personality and recording artist. In April 2023, she was appointed as an official co-host for MBC's weekly television music showcase Show! Music Core, a position she maintained through February 2025. Her individual artistic projects include collaborating on original soundtrack recordings, notably performing the duet track "The Moment" alongside her bandmate Lily for the television drama series Love to Hate You. She actively continues her artistic work through global tours, brand appearances, and group performances.