Hrithik Roshan will play three roles in his upcoming film, Krrish 3

Rana, move over. Rajnikanth isn't the only one who can pull off three roles in one film. Hrithik Roshan will play three characters in Krrish 3 -- the father, son and grandson. And if he had his way, Roshan would have played villain too.

But his father, director Rakesh Roshan, was keen that Vivek Oberoi play the bad guy. Sources say the duo had massive arguments over the matter.

Speaking on the casting, Rakesh Roshan said, "It was not possible for Hrithik to play the antagonist. He is already playing three roles. I had Vivek in mind for the part right from the start. He has the right physique and body language for it."

"Suresh (Vivek Oberoi's father) and I have been friends for years. I wanted to work with Vivek for a long time. When the role of the antagonist in Krrish 3 came up, I instinctively knew Vivek was right for it."

The producer-director laughs off any suggestion that Oberoi would have to work on his physique for the part. "Both Hrithik and Vivek have the perfect physique. There is nothing more they can do to better it. They just need to start shooting."

Krrish 3 will hit the floor in November and Rakesh will start location hunting soon. "Most of the film will be shot in Mumbai, " he clarified. Will Krrish 3 have the same special effects as the previous film, given that Shah Rukh Khan's Ra.One -- touted to be the film to watch out for -- is releasing?

"We are not really anxious about the special-effects in other films. We are just happy to be doing what is right for our film. If there are three cars that must be blown up, we won't blow up six just because it looks better."