Percy Carey (born 11 June 1970), also known by the stage names MF Grimm, Grimm Reaper, GM Grimm and originally Build and Destroy, is an American underground rapper, music producer, CEO, and Eisner Award-nominated comic book writer from New York City. He is a founding member of the Godzilla-inspired Hip-Hop collective Monsta Island Czars and early-90s Hip-Hop group Gravediggers with Roc Raida.