WJSN, also known as Cosmic Girls, is a South Korean-Chinese girl group formed by Starship Entertainment and Tencent Music Entertainment. Debuting in February 2016, the group originally consisted of twelve members, showcasing a blend of various musical styles and concepts. Their name reflects a cosmic theme, symbolizing their diverse talents and unity. The group has released several successful albums and singles, gaining popularity both in South Korea and internationally. Known for their vibrant performances and catchy songs, WJSN has participated in various music shows and events, earning a dedicated fanbase called UJUNG.