Woollim Rookie (울림 루키) is a pre-debut team of trainees under Woollim Entertainment.
These trainees have graduated from Woollim Rookie, and are now artists under Woollim Entertainment.
- Lee Hyeop (이협)
- Hwang Yun Seong (황윤성)
- Joo Chang Uk (주창욱)
- Kim Dong Yun (김동윤)
- Kim Min Seo (김민서)
- Cha Jun Ho (차준호)
- Kwon Eun Bi (권은비)
Past members consist of former trainees who have left Woollim Entertainment or the Woollim Rookie project.
- Yoon So Yoon (윤소윤) (left approx. August 2018)
- Kim Chae Won (김채원) (left approx. September 2021)