Sources have stated that Cho has made his debut in 1963 with Paar Magale Paar as comedian. From 1963 to 2005 he acted in 190 Tamil films. His career best performances are regarded as Muhammad Bin Tughlaq, Thenmazhai, Ninaivil Nindraval, Bommalaatam, Delhi Mappilai, Adimai Penn, Dharsinam, Nilgiri Express, Anayium Pithavum, Ayiram Poi, Deiva Sankalpam, Maligai Poo, Manam Oru Kurangu, Antharangam, Nirai Kudam, Therottam, Kashi Yatirai, Thangapadhakam, En Annan