ZEROBASEONE (Korean: 제로베이스원; initialized as ZB1) is a South Korean boy group under WAKEONE Entertainment, formed through Mnet's 2023 reality competition show BOYS PLANET. The group is composed of 9 members: Sung Hanbin (STUDIO GL1DE), Kim Jiwoong (individual trainee), Zhang Hao (Yuehua Entertainment), Seok Matthew (MNH Entertainment), Kim Taerae (WAKEONE Entertainment), Ricky (Yuehua Entertainment), Kim Gyuvin (Yuehua Entertainment), Park Gunwook (Jellyfish Entertainment) and Han Yujin (Yuehua Entertainment).