Pooja is replacing Sonakshi Sinha, who was originally signed for the film. After Sonakshi's exit, it was rumoured that Shriya Saran was approached for the role, but did not work out.
"Pooja Kumar will star opposite me in 'Viswaroopam'. She's a Punjabi girl of Indian origin. It's a big break for her. 'Vishwaroopam' is probably the biggest film being made in Tamil Nadu, " Kamal told a Mumbai tabloid.
Crowned Miss India USA, Pooja worked as VJ for Channel V and was a newsreader on the show "Namaste America".
She did small roles in "Kaadhal Rojave", "Night of Henna", "Flavors", "Hiding Divya", "Park Sharks", "Bollywood Beats", "Anything For You" and "Anjaana Anjaani".