aespa is a South Korean girl group formed by SM Entertainment, debuting in November 2020 with four members: Karina, Giselle, Winter, and Ningning. The group is known for their concept involving virtual AI members called 'ae' (avatars of real members) and has achieved major commercial success with hits like 'Savage' and 'Spicy'. They are one of the most successful K-pop groups of the 2020s, known for their high-energy performances and sophisticated production.