- Name: Song Moonbong (송문봉)
- Position: Vocalist | Maknae
- Date of birth: July 8th 1998
- Specialty: singing
- Hobbies: watching movies, shopping
- Favorite foods: meat, tonkatsu, spaghetti and chicken
- Motto: 'Don’t regret anything'
- He joined MASC on 12th September 2017
feb 5 2018 ∞
feb 11 2018 +