Prasanna was born to a upper middle class family in Trichy. His father was an employee in BHEL and his mother is a housewife. He has a younger brother. Prasanna was good at mimicry and acting, when he was in school and college. This quality of him got the first opportunity. He was a EEE student in Saranathan College of Engineering when he responded to an open audition for actors in Susi Ganesan's Five Star.