Birth Name: Park Seok Joon 박석준

Position: Rapper

Birthday: December 15, 2004

MBTI: ENFJ

- He was revealed as a member on December 2, 2022.
- His nicknames are Park Georu and Sobbing Prince.
- Seokjoon says his eyesight is bad and he wears lenses.
- He loves bowling and playing Escape from Tarkov.
- Some songs he likes listening to are Yanezu Kenshi's "Lemon", Yorusika's "Left-Right Confusion", and Meloh's "Play With Me".
- He's a huge fan of Iron Man since he was about 9 years old (Fansign).