The director needs a special villain for this movie. The character of this villain is something high tech but poisoned with a sugar coat. For this role, Prithviraj is said to be the first choice of Mani Rathnam and he has almost finalized Prithviraj to play the role.
[an error occurred while processing this directive] Though Prithvi entered Tamil Cinema playing a villain in Kana Kanden, hit films like Paarijatham, Mozhi and Vellithirai have now given him an image of a soft hero.
Mainstream actors usually won't try doing a villain role and damage their image of a hero that they have attained after much hard work. But Prithvi is accepting the role just to add a new colour in his career.