Reportedly, Hrithik and the team behind the production are keen on hiring an 'actor with fantastic acting capabilities' for Krrish 4, which is slated to go on floors by the end of 2018. According to recent reports, Rakesh Roshan's upcoming action film, part of the Koi... Mil Gaya (2003) superhero series, may feature Nawazuddin Sidiqqui playing the role of the antagonist. A source close to the development has been quoted saying, "Hrithik and the whole Krrish team wanted an actor with fantastic acting capabilities, and who is better than Nawazuddin for this part? He has shown his action-packed, no non-sense, grey side in several films and the team felt he would be perfect for the role. Nawaz is keen on the film too, but he is yet to sign on the dotted line." In the meanwhile, the team is on the hunt for a female lead.