Pentagon
Noun. Kpop boy group that debuted on October 10th, 2016 (10/10) and is produced by entertainment company Cube. Consists of ten members: Jinho, Hui, Hongseok, E.Dawn, Shinwon, Yeo One, Yan An, Yuto, Kino, and Wooseok.

The group debuted with the song Gorilla and is currently very active in both Korea and Japan. They also had a variety show called Pentagon Maker to showcase their skills before debut. Their fandom name is called "Universe."
Universe: Wow, I love Pentagon so much! They have so much fan service!
International Universe: Wow, I can't wait until Pentagon comes to my country for a concert and then leave the very next day!