aespa (에스파; also stylized as æspa) is a four-member girl group under SM Entertainment. They debuted on November 17, 2020 with the digital single “Black Mamba”. Their name is a combination of “æ”, which means ‘Avatar X Experience’, and “aspect”, which means double-sided. Together it means that you would being able to experience a new world through another avatar of yourself. Each member has a digital version of themselves, referred to as avatars.