"I loved Jack Nicholson's Joker in 'Batman' and it was on my mind when I was working on Kancha Cheena's laugh," said Sanjay.
The actor went bald to get his look right as the villain in the revenge drama, which also features Hrithik Roshan and Priyanka Chopra.
But thanks to his bald look, when he returned home from shooting one day, his twins failed to recognise him, says a source.
His twins -- Iqara and Shahraan, couldn't recognise their dad as they had last seen him with a crown full of hair. But all was well once they heard his voice.