Sethunath (commonly known as Sethu) is Scriptwriter from Malayalam film industry. He was one of the duo of script writers Sachy - Sethu. Chocolate(2007), Makeup Man(2011), Seniors (2011) are the major films from Sachy - Sethu combo. Mallu Singh(2012) was the first independent movie as scriptwriter. I Love Me(2012), Salaam Kashmier(2013), Cousins(2007), Achayans(2017) are his rest of movies as independent scriptwriter.