9001 (Ninety O One).

Oyster (오이스터), formerly known as 9001 (NINETY O ONE), is a 4-member band managed by Label on Table. The current lineup includes Jogon, WON WOO, Ui Geon, and Ju Won. Former member Jese departed the group in May 2021. They originally began activities on July 24, 2018, as a 5-member group with the single “What If We Bow.” They re-began activities on January 4, 2022, using the name 9001 (나인티오원) through the single album Plastic Love, under Amuse Entertainment. In May 2025, it was revealed that their activities as 9001 had come to an end, as their contract with Amuse Entertainment expired, and they would resume promoting using the name Oyster.