Jelly-i Male Trainees.

The profile also notes that These were the male trainees at Jellyfish Entertainment who were first introduced as contestants on Mnet’s Boys Planet in early 2023. Another profile detail is that The trainees were Han Yuseop, Park Hyunbeen, and Jang Yeojun. Additional background says that Although not confirmed, they were presumed to debut together with Park Gunwook once he wrapped up promotions with ZEROBASEONE (ZB1) in 2026. The profile also notes that However updates on the trainee’s Instagram account stopped in November 2023 and by April 2024 all of the trainees were revealed to have left the company.