The hot and sexy mallu babe Nayantara is being considered to play the lead role in Shankar's magnum opus sci-fi film 'Robot'. Rajnikanth has already given his green signal to Shankar. Nayantara is now a big name with the stupendous success of Billa. Nayantara had earlier worked with Rajnikanth in Chandramukhi. She also acted in an item number in Sivaji. If Nayantara makes it to Robot, then she is assured of super stardom in 2008.