Park Ji-hoon

In 2017, Park represented Maroo Entertainment in the second season of Produce 101. He experienced a sudden rise in popularity after going viral as "wink boy (ko: 윙크남)", after the introductory "It's Me (Pick Me)" stage on M Countdown, before the show had started airing. Consequently, Park's participation in the survival show received extensive media attention, to the extent that his self-made aegyo catchphrase "save you in my heart (ko: 내 마음 속에 저장)" trended on social media and was used by various companies using the phrase for marketing purposes. The phrase was later crowned as the best catchphrase of 2017 by KOCCA. Furthermore, Park received offers from various companies to become their advertisement model while the show was still being aired, and it was later revealed that Park had signed an exclusive contract with Maroo Entertainment before the show had started. He finished second, which made him a member of the project boy group Wanna One under YMC Entertainment. Wanna One disbanded on December 31, 2018 and officially completed activities after their sold out 4-day final concert series 'Therefore' that ran from January 24 to 27 at Gocheok Sky Dome.

Park debuted as a child actor, participating in musicals Peter Pan (2007–2009), The Harmonium in My Memory (2010), and Radio Star (2010–2011), and in television dramas Jumong (2006–2007), The King and I (2007–2008), Kimchi Cheese Smile (2007–2008), Iljimae (2008), and more. Park also appeared in SS501's reality show SS501 SOS (2006), although his face was blurred out through the episodes. In 2007, he appeared in KM Idol War with Big Bang. During his childhood, he continued to be active in musical theatre, television broadcasts, and film, as well as working as an advertisement model.

Park first made his debut as a child actor, appearing as a supporting cast member on the MBC historical drama Jumong (2006) and earned roles in the several television dramas such as The King and I, Kimchi Cheese Smile and Iljimae. He also established himself as a musical actor through his participation in the musicals Peter Pan, The Harmonium in My Memory and Radio Star. With the conclusion of the group activities in January 2019, Park began his solo career with EP O'Clock in March 2019.

Park Ji-hoon (Korean: 박지훈 ; born May 29, 1999) is a South Korean singer and actor. He is known for his participation in the reality competition show Produce 101 Season 2, where he finished in second place overall and became a member of the boy group Wanna One, which released several chart-topping albums and singles from 2017 to 2019. The group achieved both critical and commercial success, with six Korean topped-five singles. He also returned to the acting scene in September 2019, making a lead role on JTBC historical drama Flower Crew: Joseon Marriage Agency.

Park Ji-hoon was born on May 29, 1999, in Masan, South Korea. Although he comes from Gyeongsang Province, Park has lived in Seoul since he was seven-years-old. He graduated from National Middle School of Traditional Arts, where he majored in musical theatre. Park majored in broadcasting arts at School of Performing Arts Seoul and graduated in January 2018. Park was accepted into Chung-Ang University’s Department of Theater for 2018.