He studied acting at the Film and Television institute, Adyar. He was given his first role by director
K. Balachander in the film
Punnagai Mannan. Later, Sundar was cast by
Kamal Haasan in the film
Kadamai Kanniyam Kattupaadu and
Sathyaa, produced by Raaj Kamal Films. Apart from mainstream films, Sundar played the lead role in the national award-winning film
Ooruku Nooruper directed by
B. Lenin. He also acted in and produced a short film,
Urumattram, which won the national award for the Best Environmental Film. After a brief hiatus, Sundar has entered into the second phase of his acting career through
Nalan Kumarasamy's
Kadhalum Kadanthu Pogum, starring
Vijay Sethupathi and
Madonna Sebastian. It was a critical and box office success. == Filmography ==