Jung Byung Hee, known professionally as G.O, is a South Korean singer, dancer, former member of TYKEYS (타이키즈) and current member of MBLAQ (엠블랙). He attended Changwon Central High School but dropped out and later passed the High School Graduation Certification Examination. He then obtained a bachelor's degree in Leisure Sports Studies from International Cyber ​​University. He made his debut in 2007 (using the stage name Jang Goon) as part of the co-ed R&B group TYKEYS with their only album, "TYKEYS Vol. 1". The group was managed by singer Lee Jung and by TY Entertainment; however, the company went bankrupt and the president was arrested for fraud. They disbanded soon after and had to go through a lawsuit to terminate his contract. He re-debuted in October 2009 as MBLAQ's main vocalist with their first single album, "Just BLAQ". They were managed by J. Tune Camp (제이튠캠프) and were heavily promoted by both the agency and by Rain, who often included them as performers during his concerts and fan meetings, so they enjoyed some success. The agency began facing financial issues and rumors of embezzlement, and with the departure of two members in late 2014, the group kept promoting itself as a trio for a bit longer until it went on an official indefinite hiatus. They have never released a statement of disbandment, but the group has not released any material or performed together since early 2015. He enlisted for his mandatory military service on February 18, 2016, and was discharged on February 17, 2018. He is currently represented by Sandbox Network (샌드박스 네트워크) and is now focusing on providing OSTs for some dramas and works as a broadcasting jockey (BJ) for Afreeca TV and is a YouTuber. He married actress Choi Ye Seul (now using the stage name Yesria) in September 2019. (Source: MyDramaList) Watch drama online for free.