Black Mamba was released in November 2020 as aespa's debut single under SM Entertainment, introducing the group's futuristic concept and its fictional villain of the same name. The track quickly became a signature song for the group, helped by its striking choreography and music video, and it spread widely through K-pop fan edits, dance covers and short-form videos. It remains popular because it marks the start of aespa's story and still works as an instantly recognisable opener for fan content.