As for BEAST’s Lee Ki-kwang, he had formerly been a top trainee at JYPE for 4 years before transferring to CUBE Entertainment. He supposed to be debut in 2AM group but got cancelled because of Wonder Girls debut. Since then he never debuted because Park Jin-young believed he was over-confident and too satisfied with his own abilities to improve. JYP thinks it’s a bad behavior to become an idol because he has no passion to improve their self. Later then he debut as a solo singer known as AJ before debuted as BEAST member.
As for BEAST’s Yoseob, he also trainee under JYP Entertainment but left after receiving a bad grade from practice reviews.
Doojon then became a trainee of JYP Entertainment and was featured in the Mnet documentary Hot Blooded Men, a reality program that shows the preparation for their debut, with 2AM and 2PM, but he was eliminated along the course of the show. Dong Woon also was a trainee from JYP Entertainment for 2 years before transferring to CUBE Entertainment.