JB (Im Jae Bum) was born in Seoul, South Korea on January 6, 1994. He was scouted by JYP Entertainment from JYP Trainee Open Recruitment 5th Audition where he tied in first place with Jr. He then underwent training for 2 years and 6 months before his debut. Official statement made by JYP explained that a new group will be made during the second half of 2012, which includes Jr. and JB, rumored to be call J&J. The JJ Project debuted on May 20, 2012.
On 24th December 2013, it was revealed that JB would be part of the new hip-hop group, Got7.
He attended Sewon High School. He attended Konkuk University at 2013.