There is more than one artist known as Pentagon.
1. PENTAGON (Hangul: 펜타곤; stylized as PENTAGON; abbreviated as PTG) is a ten-member South Korean boy band formed by CUBE Entertainment in October 2016. The group is composed of: Yeo One, Hong Seok, Hui, Jin Ho, Yan An, Shin Won, Woo Seok, Kino, E'Dawn and Yuto. The group debuted on October 10, 2016, with song titled "Gorilla" taken from their first mini-album PENTAGON.
2. Pentagon is electronic artist Kōichi Yamazaki, known for his collaborative work with Michiru Ōshima on the PS2 video game ICO.
3. Pentagon is heavy metal band from České Budějovice, Czech Republic.
4. Pentagon is 70's Krautrock band from Germany.
5. Pentagon is Gunther Becker and Ralf Thummerer project. They made three releases; two euro house/dance for Musicolor label in 1990 and one hardcore/acid in 1993 for Crash Records.