Park Hyung Sik is a South Korean singer, dancer, actor, musical actor, producer and member of ZE:A (제국의 아이들). He graduated from Singal High School and later obtained a bachelor's degree in Acting Arts from Digital Seoul Culture and Arts University.

He made his debut in January 2010 as the group's main vocalist and visual with their first single album, "Nativity". Originally named Child of Empire, Star Empire Entertainment (스타제국) decided to officially establish it as ZE:A. However, they faced immediate controversy as it was very similar to Brown Eyed Girls member JeA. Both agencies began negotiations and agreed that ZE:A's pronunciation will be changed to avoid any confusion. Afterwards, they enjoyed a lot of success and signed with Sony Music for promotional activities in 9 countries, mainly in Southeast Asia, where the group became incredibly popular in a short time. His contract with Star Empire expired in January 2017 and rumors began circulating about a possible disbandment. However, the agency and the members released separate statements indicating that the group was now officially on an indefinite hiatus but was not disbanding. He enlisted for his mandatory military service on June 10, 2019 and was discharged on January 4, 2021. After his release, he setup a new company called P&Studio (피앤드스튜디오) with some of his long-time managers as a subsidiary of his former agency, United Artists Agency. He is now focused on becoming an all-around entertainer as he appears in musicals, dramas and commercial modeling.