PENTAGON (펜타곤) is a nine-member boy group under Cube Entertainment. They were formed through the competition reality show Pentagon Maker and officially debuted on October 10, 2016 with their self-titled mini album.
In December 2015, it was reported Cube will debut a new boy group within the first half of 2016. On April 26, 2016, Cube released a teaser video for the group. Prior to their debut, the final lineup would be determined through Mnet's reality survival show Pentagon Maker. At the end of the show, E'Dawn, Shinwon, and Yan An were eliminated with the remaining members to debut.
Pentagon made their official debut on October 10, 2016 with 10 members, including the members eliminated from Pentagon Maker, E'Dawn, Shinwon, and Yan An. On the same day, Pentagon released their first Korean EP Pentagon comprising seven tracks including the lead single "Gorilla".
On April 2, Pentagon released their sixth Korean EP Positive which features six tracks including lead single "Shine". The song eventually becoming a sleeper hit by word of mouth from listeners due to its unique melody and powerful choreography. Since its release, the lowest it placed on Melon's daily chart was in the 500s, but it slowly rose to number 186 on April 29. A month after its release, on May 1, the track rose to number 95 at Melon's real-time chart. The single peaked at number 16.
After Hyuna announced her relationship with E'Dawn in August, on September 13, 2018 Cube Entertainment announced that they would be terminating their contracts, citing that they could not "maintain trust" with them. On November 14, Cube Entertainment officially confirmed E'Dawn's departure from the group and company.
Pentagon participated in Mnet's reality television competition Road to Kingdom, which aired from April to June, 2020.