Gunwook became part of ZB1 members with 1,386,039 votes gathered in BOYS PLANET final

His hometown is Gyeonggi-do, South Korea. He has an older brother. He trained for 2 years and 5 months under Jellyfish Entertainment. He was part of an anti-bullying committee and even

He loves wind. Along with Matthew, Gunwook’s role model is Jay Park. His favorite song is Come Together by Chris Brown.