myB (마이비) was a six-member girl group under Maroo Entertainment. They debuted on August 25, 2015 with the single "My Oh My". Their name stands for You're my Best, meaning the group's ambition to become the best in the music industry.
They added another member, Ha Yoon, into the group for their second single comeback. Their agency announced on December 14, 2016 that the group had disbanded.
- Joo Kyung (주경) - leader, main rapper
- G Won (지원) - main vocal
- Moonhee (문희) - lead rapper, visual
- U Jung (유정) - lead vocal
- Hee Joo (희주) - main dancer
- Hayoon (하윤) - maknae, vocal