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Zerobaseone (Korean: 제로베이스원; stylized in all caps; abbreviated as ZB1) is a South Korean boy band formed through Mnet's reality competition program Boys Planet and managed by WakeOne. The group consists of five members: Kim Ji-woong, Sung Han-bin, Seok Matthew, Kim Tae-rae, and Park Gun-wook. Zerobaseone was originally a nine-piece ensemble; members Zhang Hao, Ricky, Kim Gyu-vin, and Han Yu-jin left the group in March 2026 following their contract expiration. Zerobaseone debuted on July 10, 2023, with the extended play (EP) Youth in the Shade and was commercially successful upon release Source: Wikipedia, CC BY-SA
