Kim Jun Su, known professionally as G:amma, is a South Korean singer, dancer, and member of ALPHABAT (알파벳).

He made his debut in November 2013 as ALPHABAT's lead vocalist and maknae with their first single, "AB City". The group originally debuted in 2012 as a duo and under another agency, but both members decided to leave YUB Entertainment. One kept the group's concept, and it re-debuted as a 9-member idol group under Simtong Entertainment.

However, they went on hiatus for almost 4 years as the members began enlisting in the military, and the group could not find any stability, switching agencies 3 times before signing with APB Entertainment (APB엔터테인먼트).

ALPHABAT returned in September 2018 with only 5 members and released their last material in March 2019. They have not officially disbanded but have not released any new music since then, and only 3 members remain in the lineup.

He was discharged from his mandatory military service in June 2023 and is now focused on his individual activities as the group remains on hiatus.

(Source: MyDramaList) Edit Biography