- Park Haeyoon (박해윤)
- Korean
- From Suncheon, South Jeolla Province, South Korea
- Born January 10, 1996
- Blood Type A
- 157 cm
- 43 kg
- Trained for three years and ten months prior to Produce 48
- Hobbies are calligraphy and travelling
- Speaks Japanese
- Plays the ukelele
- Appeared as a contestant on MNET's Produce 48 representing FNC Entertainment, initially ranking as an A after her performance of "Power" by Little Mix. After the rank re-evaluation, Haeyoon joined the D rank trainees. She was leader and main vocalist of her team who performed "Like OOH-AHH (Japanese Ver.)" by TWICE, and led her team to victory. In the Position Evaluation, Haeyoon was centre and main vocalist in the performance of "Merry Chri" by BoA, finishing first out of her group. In the Concept Evaluation, Haeyoon was main vocalist in the performance of "다시 만나 (See You Again)". In the final, she performed as sub vocal 7 in "앞으로 잘 부탁해 (We Together)" and finished in 19th place. (June 15 – August 31, 2018)
- Revealed as the fourth member of Cherry Bullet (November 22, 2018)
nov 23 2018 ∞
dec 5 2018 +