Behind the Scenes
Khan described his role as Dr. Ratha as a "pivotal role". He said that he got his role after appearing in the drama television series In Treatment. He said that Marc Webb has seen his work and approaching him saying he wants to work with Khan. Khan admitted, though, that he wasn't really interested in the project at first, but both of his sons were excited about it and insisted that he go.
The Hollywood Reporter originally reported Khan to play the comic book character, Van Adder.