In 2003, Rakesh Roshan collaborated with son Hrithik Roshan for the Sci-Fi drama, Koi... Mil Gaya, and it turned out to be the highest grosser of the year. Three years later, the father-son duo made a sequel, Krrish, which became India's first Superhero film and also a giant success.

The franchise continued when the Roshans gave the audience Krrish 3 in 2013, again a major money-spinner. They are now set for part four since the last one ended on a cliffhanger. In Krrish 3, Hrithik Roshan played a triple role, that of Krishna Mehra, his father Rohit Mehra, and the Superhero Krrish. Pinkvilla now reports that this time, he may don as many as four characters.