Cheloo (Cătălin Ștefan Ion by his real name) is a Romanian hip-hop artist and a founding member of Paraziții. He is also a music producer and together with Ombladon and Freakadadisk he set up 20 CM Records. He started out as a producer and sound engineer at Studio Box, the place where he gained most of his experience. Starting 2003 he has his own studio and is currently promoting his personal label called 16HZ and acts as a producer for two local acts.