Acting
Song Hyeong-jun
November 30 2002- Place of birth: Tongyeong, South Gyeongsang, South Korea
- Gender: Male
- Also known as: 송형준, Song Hyung Jun, Song Hyeong Joon, Song Hyung Joon, 엑스원, X1
Song Hyeong Jun was a Korean pop trainee for one year and three months under Starship Entertainment prior to his appearance on Produce X 101.
