Akshay Kumar given a special birthday present to his fans by sharing the poster of his most powerful character ' Dark superhero' .He said that he will be acting the dark superhero for those who don't have a voice. Karan Johar will be the producer of the film. The film 3D teaser will be released on September 13 . Along with Akshay Kumar, Rajinikanth and Amy Jackson will play the lead role.