Berikut sembilan trainee yang akan debut sebagai anggota ZEROBASEONE (ZB1).
1. Zhang Hao (Yuehua Entertainment) - Cina (2000)
2. Sung Hanbin (STUDIO GL1DE) - Korea (2001)
3. Seok Matthew (MNH Entertainment) - Korea (2002)
4. Ricky (Yuehua Entertainment) - Cina (2004)
5. Park Gunwook (Jellyfish Entertainment) - Korea (2005)
6. Kim Taerae (WAKEONE) - Korea (2002)
7. Kim Gyuvin (Yuehua Entertainment) - Korea (2004)
8. Kim Jiwoong (Trainee Individu) - Korea (1998)