Bollywood actor Neil Nitin Mukesh, who plays a villain in Tamil film "Kaththi", has dubbed in his own voice. He says it was tough, but a learning experience.

"Dubbed my own voice for KATHTHI. Quite a learning experience. Difficult language. But always feels good overcoming a challenge," Neil tweeted Thursday.

A.R. Murugadoss-directed "Kaththi" also features Vijay and Samantha Ruth Prabhu in the lead roles.

Of his role, Neil had earlier said that he hasn't played an over-the-top villain in the film, which will release around Diwali.