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Hongseok promoting UNIVERSE : THE BLACK HALL (2020)

Hongseok (홍석) is a South Korean singer under CUBE Entertainment. He is a member of Korean pop group PENTAGON.


  • Stage Name: Hongseok (홍석)
  • Birth Name: Yang Hongseok (양홍석)
  • Birthdate: April 17, 1994 (1994-04-17) (age 28)
  • Birthplace: Seoul, South Korea
  • Blood Type: A
  • Height: 178cm
  • Weight: 65kg
  • Languages: English, Chinese
  • Education:
    • Hwachong Institution
    • Tianjin Nankai High School
    • University of International Business and Economics



  • [2014] MIX & MATCH (with iKON)
  • [2016] Pentagon Maker


  • [2017] The Love That's Left


  • Previously a YG Entertainment trainee. He also had auditioned for JYP 9th Audition Final Round in 2012.