Jellyfish Entertainment, agency of popular boy group Vixx, will soon debut a new girl group.

The group, called "Gugudan," will debut on June 28. To build hype for the upcoming group, Jellyfish has uploaded a huge amount of teasers and information on their official Facebook page. Nine videos, each featuring one of the group's nine members, have been uploaded. The members' names are Hyeyeon, Mina, Sally, Haebin, Sejeong, Soyee, Mimi, Nayoung, and Hana.

Three of the members, Sejeong, Mina, and Nayoung, are part of the project girl group I.O.I, which was formed from the winners of Produce 101. 

On June 20, the group will release "debut film #1," which appears to be about their debut. Two days later on June 22, they will release "debut film #2." 

After that, the album cover will be released on June 23, followed by a highlight medley on June 24. The music video teaser will come out on June 26, with a live V app broadcast the next day. Finally, Gugudan's full music video will come out on the 28th. 

The group's name also has a special meaning in Korean. "Gugudan" means the multiplication table, and Gugudan represents nine girls who are attractive in nine different ways.