Karina, born on April 11, 2000, in Suwon, South Korea, is the leader of aespa. Known for her sharp dance moves, powerful rap, and striking visuals, she also takes on vocal duties in the unit GOT the beat. Charismatic and commanding on stage, Karina plays a key role in shaping aespa's bold image. She has also gained attention for her AI-like visuals and strong presence in both music and fashion.

Giselle, born Uchinaga Eri (Japanese: 内永 枝利) / Kim Aeri (김애리), is a South Korean-Japanese member of the girl group aespa. She was born in Seoul and raised in Tokyo, where she attended international schools and became fluent in Korean, Japanese, and English. Before debuting, she was part of her school choir, showing early interest in music and performance.

Winter was born on January 1, 2001 (age 24) in Busan, South Korea. She is a vocalist, dancer and visual of the girl group aespa and a vocalist and the maknae of the unit GOT the beat. A talented performer known for her clear vocals, graceful dance, and striking visuals, Winter has also contributed to various OSTs and earned global ambassador roles with brands like Polo Ralph Lauren.

Ningning (Ning Yizhuo; Chinese: 宁艺卓), born October 23, 2002, in Harbin, China, is the main vocalist and maknae of aespa. Known for her powerful voice and vocal stability, she trained under SM Entertainment for several years before debuting in 2020. She also serves as a global ambassador for Versace and Maybelline, highlighting her growing influence in music and fashion.