Gugudan, also stylized as gu9udan or gx9, is a South Korean girl group formed in 2016 by Jellyfish Entertainment. They debuted on June 28, 2016 with the mini-album Act. 1 The Little Mermaid and its title track "Wonderland". The group consists of nine members: Mimi, Hana, Haebin, Nayoung, Sejeong, Sally, Soyee, Mina, and Hyeyeon. After 2 years with no group activities, Jellyfish Entertainment released a statement declaring that the group would end activities and officially disband on December 31, 2020.