GOT7, JJ Project, and Jus2: All the units JB is a part of

JB has been a fixture in the K-pop world since his early teens, moving from trainee to leader without ever slowing down. He first caught JYP’s attention in 2009 when he won an open audition alongside Jinyoung. Two and a half years of training followed, but JB still found time to appear as a backup dancer in Dream High and later landed a lead role in Dream High 2 before GOT7 even existed.

Those early years set the pattern for everything that came next: constant movement between group work, subunits, acting, and solo projects. The subunits in particular gave JB space to experiment while still anchored to GOT7’s larger story.

JJ Project

JJ Project arrived first. On May 20, 2012, JB and Jinyoung debuted as a duo with the single “Bounce.” The video passed a million views in two days. They performed at JYP Nation shows and opened for Wonder Girls, yet the project stayed small until GOT7’s 2014 debut placed JJ Project on hold. A surprise 2017 EP brought the unit back with “Tomorrow, Today,” which reached number 27 on Korean charts and number 9 on Billboard’s World chart. No new music has appeared since the Verse #2 EP, and the unit has stayed inactive as of 2026.

GOT7

GOT7 debuted in 2014 with JB installed as leader, main vocalist, lead dancer, and center. He also writes under the name Def or Defsoul, contributing tracks such as “You Are,” “Home Run,” and “Dreamin’.” A spinal disk injury forced him off the road in 2016, but he returned before the end of the Fly Tour’s Asian leg. The group’s departure from JYP in 2021 shifted JB’s focus toward solo work while GOT7 continued on its own schedule.

Jus2

In 2019 Jus2 introduced JB and Yugyeom as a sleek, choreography-driven pair. Their debut EP Focus arrived with a short tour across Indonesia, Korea, Japan, Thailand, Taiwan, Singapore, and China. Yugyeom noted that the project let them explore colors and movement they could not try inside GOT7. The unit was always framed as temporary, and no further releases or tours have followed the 2019 Focus EP.

JYP Nation

JYP Nation concerts once gave JB regular chances to share stages with artists from TWICE, Day6, Stray Kids, 2AM, and Miss A. Those large-scale label events have grown rarer in recent years. With GOT7’s exit from JYP, JB’s focus moved away from label-wide showcases and toward independent projects.

Offshore

Offshore began in 2019 as JB’s outlet for R&B and soul writing with friends. Under the name Def he performed on three tracks and produced every song on the debut album Scene #1. Follow-up projects arrived with Scene #2 in 2020, Cut #1 in 2021, and Scene #4 in 2023. JB continues to write and feature on Offshore material whenever the schedule allows.

Solo Career Milestones

After GOT7’s JYP chapter closed, JB stepped into solo releases with growing momentum. His first full album, Archive 1: [Road Runner], arrived in November 2024. The third EP, Tr.ee, followed in June 2026 under the 528Hz label. World tours supported both projects, including U.S. dates in 2025 that marked his first major solo run across North America.

Label Transition and Leadership Role

JB’s contract with Mauve Company ended in December 2025. In April 2026 he signed with 528Hz as both artist and CEO, giving him direct control over creative decisions and release strategy. The move placed him in an executive seat while still releasing music under his own name.

Military Service and Return

JB completed mandatory military service and was discharged on November 1, 2024. The timing aligned with the Archive 1 rollout, allowing him to move straight from service into album promotions and live dates. Post-discharge concerts picked up quickly, confirming that the break had not slowed audience interest.

Across every unit and every label shift, JB has kept the same habit: show up, write, and keep moving. The subunits gave him room to test ideas, while the solo chapter has let those ideas stand on their own. Fans tracking the timeline now see a clearer arc from trainee to CEO, with the same steady output that started back in 2009.