Blockhead (born Anthony "Tony" Simon) is an American Hip hop producer based in Manhattan, New York. Aside from his solo efforts released on the Ninja Tune label, he is most associated with producing for Aesop Rock, a rapper for the Definitive Jux independent hip hop label. He has also previously worked with rappers C-Rayz Walz, iCON the Mic King, Mac Lethal, S.A. Smash, Slug and Murs. He is also a member of the hip hop/comedy group Party Fun Action Committee. He is the son of the late Sidney Simon, a well known sculptor in New York City.