They entered filmdom via different routes - elder brother Siddharth Roy Kapur is the managing director, Studios, Disney UTV, while their younger brother Aditya is now an actor, last seen in the film "Aashiqui 2".
"I wouldn't call us a film family. We have followed different routes into the film world. My brother Siddharth came from the corporate world and had his own route into the film world. I came through theatre and TV and Aditya as a VJ. We aren't really born into a film family," Kunaal told in an interview.
Kunaal, who has acted in films like "Delhi Belly" and "Nautanki Saala", revealed that his grandfather came to the Maximum City to make films, but couldn't get much success.
"Our grandfather came here to make films. He made some films, but failed miserably at it. We have never been a film family in that sense. My dad was in the army and my mother was a dance teacher. We have now ended up becoming a film family, which is wonderful and strange also," he said.
Before facing the camera, Kunaal went behind the lens to direct "The President Is Coming", a satirical mockumentary.
He feels that "it takes a certain amount of political and social awareness to be able to enjoy satire".
"You have to be aware of the social climate at that time. It works in context to what is happening in the society. For people who are aware, it is a great form of entertainment as it is sourcing from what is there," he said and added that humour presented in any form works.
"We have always had different kind of comedies. We have had Amol Palekar to Johnny Lever. All sorts of humour works. I don't want to disrespect any humour as you can't tell people what to laugh at and what not to.
"You can't be so presumptuous and snobbish about humour. Humour is subjective and everyone is free to laugh at whatever they find funny," he said.
For Kunaal, other than box office returns, the process of making the film also needs to be fun.
"When you are having fun working, half the battle is won. It's not a chore anymore. Your success lies in enjoying your time. The box office is one thing, the success of a film also lies in the process of making it. For me, it was a great joy making 'Nautanki Saala' and I would do it again," he said.