"We are announcing the name of the male lead of the film at Cannes," Paul told IANS, affirming that after a long process "we could finalise an actor".
"We found more than 20 actresses, who agreed to act with frontal nudity, but could not got a single male actor, who is famous, ready for the role," he added.
King Mal will be seen doing martial arts like kalarippayattu in the film.
"We had short-listed five actors in November last year and gave them specific requirements for the character. We did three-stage auditions with these actors and out of them King Mal Khan was more impressive," said Paul.
"Since the movie had a lot of action sequences and martial arts like kalarippayattu, training was important. He made a lot of effort in voice training also. And he impressed me by getting rid of his six-pack to become a naga sanyasi in the movie," he added.
The film's team is in Cannes since May 15 to unveil the second trailer of their film.