Giovanni Marks (born October 2, 1978), better known by his stage name Subtitle, is a rapper and producer based in Los Angeles, California. He is one half of the duo Lab Waste alongside Thavius Beck. He has also collaborated with other artists such as K-the-I???,Busdriver and Islands.
Subtitle released an EP entitled I'm Always Recovering from Tomorrow in 2003 and an album entitled Young Dangerous Heart in 2005, both on the label Gold Standard Laboratories. His group Lab Waste (with Thavius Beck) released an album, Zwarte Achtegrond, at the beginning of that year.
October 2006 saw the release of Terrain to Roam, an album which featured production from Daddy Kev, Daedelus, Thavius Beck, Omid, Nobody, Paris Zax, Madlib, Dntel, Crunc Tesla, and Small Is Beautiful among others.