Yoo Seung-jun
- Nacimiento
- 1 de mayo de 1992 (34 años)
- Lugar de nacimiento
- South Korea
He is a MR.MR. former member with stage name Joon. He joined the group as a sixth member in November 2013 and left in February 2014 due to controversy spread by his old friend. He has a YouTube channel with his friend Zeze.
