C-Rayz Walz is a rapper from New York. He left the underground record label Definitive Jux in June 2006 and is rumored to be on Uncle Howie record co. As well as releasing four LPs and one EP, he has appeared on many other rappers' records, including Aesop Rock and Immortal Technique, and has done work with such artists as Percee P. Immortal Technique is reputed - by Walz himself - to be the only emcee who can hold his ground against Walz in a freestyle battle.