UMC = Undisputed Masters of Charisma p.k.a Universal M.C.'s

The UMC's was an American hip-hop duo from the borough of Staten Island in New York City.
The group was composed of Haas G and Kool Kim, who released the critically acclaimed, full-length album Fruits of Nature in 1991, which garnered chart success with the duo's #1 Billboard Hot Rap Single Blue Cheese and #2 Hot Rap Single One To Grow On. In 1994, the duo released its sophomore album, Unleashed but split up soon after.
Since the group's break-up, Haas G has focused on producing music, most notably garnering a #1 hit for Lil Kim featuring 50 Cent, with The Magic Stick. Kool Kim reinvented himself as the controversial underground emcee NYOIL. (courtesy Wikipedia)