- Maknae of TeSTAR
- Producer, main rapper
- Born on November 11
- 180.5 cm
- 19 yo when he debuted
- Since he was raised by his grandmother, he speaks in an elderly way
- MBTI is INFP
- 4th place in AJUSA
- Originally Ryu Gunwoo (류건우)
- Main vocal in TeSTAR
- PMD born on December 15, RGW born on December 8
- 178 cm
- 21 yo when he debuted
- Was a photographer who sold idol’s data in his previous life.
- MBTI is INTJ
- 1st place in AJUSA
- Main dancer in TeSTAR
- Visual
- Born on May 7
- 183 cm
- 21 yo when he first debuted
- Studied ballet in France. An accident caused him to have a speech impediment
- MBTI is ISFJ
- 3rd place in AJUSA
- Eldest in TeSTAR
- Sub vocal
- Born on February 7
- 177 cm (which makes him the smallest out of everyone in the group)
- 23 yo when he first debuted
- Child actor, used to go by Lee Sejin
- MBTI is ISFP
- 7th place in AJUSA