HONGSEOK (Yang Hong-seok) is a vocalist and actor whose career includes music releases with PENTAGON and appearances in Korean drama projects. His group debut took place in October 2016.

He began developing a separate acting career while continuing band activities. Individual drama performances and cover videos are not independent solo singles, even when HONGSEOK receives an individual screen credit.

In 2026 he returned to the seven-member anniversary lineup and helped promote Coward. No verified independently distributed music single or album under HONGSEOK’s solo artist credit has been established for this page.