Jiyeon, Yejin, Soobin, and Cho.

Former SM trainees that have moved on to Starship Entertainment.
Together they form the group, STAR.

Jiyeon, the charismatic lead vocal.
She is the designated cheerful member, as she always makes the members smile.
Nickname: Hum nam.
Korean
She is the oldest member, at 20 years.

Yejin, real name Sai, the strong leader, lead rapper, and dancer.
She is fluent in 6 languages: japanese, english, korean, mandarin, french, and swedish.
Nickname: THR3AT, because she is good at rapping, dancing, and singing.
Japanese
She is younger than Jiyeon, at 20 years.

Soobin, the stunning visual, and main vocal.
She is the sexy member, and was previously a model.
Nickname: Soosoo.
Korean
At 19 years, she is the second youngest.

Cho, the maknae, and lead dancer. She choreographs many of the dance routines, sometimes alongside Yejin
She is the most dramatic member.
Nickname: Diva.
Chinese
She is youngest member at 18 years.