The much talked about film Brahmastra having Ranbir Kapoor, Amitabh Bachchan and Alia Bhatt in the lead has Mouni Roy as their main Villian in the film. Mouni after being popular name on Television, made her Bollywood debut with Akshay Kuamr in film 'Gold'. Mouni revealed in an interview, that she was taken by surprise when she was asked to play the negative role in such a big movie. She takes up roles that challenge her and gets her to experiment. Further she added that director Ayan Mukerji, had seen some scene of her famous show 'Naagin' and decided that I could play the Villain to his film. So you never know what clicks for whom. Also she feels as an actor it is important to experiment and be versatile otherwise there will be no learning or growth to an actor.