ChoCo1 is ChoCo Entertainment's predebut boygroup and a subunit of co-ed group ChoCo1&2.
The lineup currently consists of Jake and TJ. Former member Sean left the group in 2024.
Trainees[]
| Stage name | Birth name | Year(s) active |
|---|---|---|
| Active Trainees | ||
| Jake (제이크) | Yeom Yechan (염예찬) | 2019-present |
| TJ (티제이) | Kim Taejo (김태조) | 2019-present |
| Former trainees | ||
| Sean (션) | Bohme Sean Yul (보미션율) | 2019–2024 |
Activity[]
ChoCo1 members JAKE (Yeom Yechan) and TJ (Kim Taejo) are currently participating in Mnet's survival show Boys II Planet as of June 9, 2025.