ZEROBASEONE (Korean: 제로베이스원; Japanese: ゼロベースワン; also shortened to ZB1) is a nine-member multinational project boy group under WAKEONE. Formed through Mnet's reality survival show Boys Planet, they made their debut on July 10, 2023 with their first mini album Youth in the Shade. They will be active for two and a half years on a special contract before it ends sometime in January 2026. The meaning behind their name is "the journey of nine trainees to complete as one after debut".