|Origin||Teaneck, New Jersey|
|The Sugarhill Gang, Grandmaster Flash and the Furious Five, Melle Mel|
Guy O'Brien is an American rapper known by the stage name Master Gee. He is founder of the hip hop group The Sugarhill Gang, and an inaugural class inductee into the Hip Hop Museum Hall of Fame. On the band's signature song, "Rapper's Delight", he raps, "I said M-A-S, T-E-R, a G with a double E, I said I go by the unforgettable name of the man they call the Master Gee".
O'Brien grew up in Teaneck, New Jersey where at an early age he was exposed to a steady stream of doo wop and rhythm and blues, and established himself as an energetic emcee in the pioneering Phase 2 hip hop crew. During the early infancy of the commercial hip hop movement in 1979, Master Gee, Big Bank Hank and Wonder Mike were discovered by producer Sylvia Robinson and brought together to form The Sugarhill Gang.
O'Brien stepped away from Sugar Hill Records in 1984, and established himself as a successful entrepreneur in the magazine industry. During the group's departure from the label, Joey Robinson Jr., son of Sugar Hill producer Sylvia Robinson, used the stage name Master Gee. O'Brien and Wonder Mike went to court over the use of the group's name and stage names  as documented in the film, I Want My Name Back. In 2014, name usage was amicably resolved, and Master Gee has since re-emerged as a mainstay in the hip hop community and music industry.
He currently lives in the Washington, DC area, and actively performs worldwide with The Sugarhill Gang and as a solo DJ. He is also a highly sought after public speaker and storyteller who launched a weekly radio show "Look, Listen, Learn" on WLVS Radio on February 21, 2019.