Sullyoon (Seol Yoon-ah), born on January 26, 2004, in Daejeon, South Korea, is a singer and member of the K-pop girl group NMIXX under JYP Entertainment. Debuting in February 2022, Sullyoon is known for her stunning visuals, sweet vocals, and graceful stage presence. She gained recognition for her vocal range, emotive singing, and polished dance skills. Sullyoon's soft-spoken nature and multilingual abilities, including English and Spanish, add to her charm. She continues to shine as a key member of NMIXX, contributing to their unique "Mixxpop" style.