He plays the lead in the third instalment of the franchise that began with 2003 hit sci-fi movie "Koi... Mil Gaya". "Through him I learnt that being a superhero is not really about wearing a mask or cape and flying through buildings....when I wear the jacket, there's a mental shift that happens and I feel unstoppable, unbreakable," he added and said that he used to forget about his pain.Directed by Rakesh Roshan, the film is set for a Nov 1 release. It also stars Priyanka Chopra, Kangana Ranaut and Vivek Oberoi in pivotal roles.