The 38-year-old actor said the role pushed him out of his comfort zone as it was different from the characters he has played in his previous films like 'Aamir', 'Shaitan' and 'Table No 21' among others.
"My character is not serious. He is eccentric. He is a little crazy but adorable at the same time. He is eccentric because he is in love with his work. His life revolves around work," Khandelwal told reporters at a press conference here.
Produced by Kavita Barjatya under the Rajshri banner, the film marks the Bollywood debut of Madalasa Sharma. The Kaushik Ghatak directed film is slated to hit theatres on April 25.
Ghatak, who helmed the banner's film 'Ek Vivaah... Aisa Bhi', has served as a director for hit series like 'Kyunki Saas Bhi Kabhi Bahu Thi' and 'Sanjivani', besides setting up many popular shows.
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Khandelwal said Ghatak has made a terrific film.
"But when he gave me the narration only then I realised that one should never judge anyone by their personality. After listening to the narration, I thought nobody could have made the film better than him. He had a command over set without raising his tone," he added.
Madalasa, who started her journey from South Indian films, said her Bollywood debut will not restrict her from taking up Southern cinema projects.
"I did not want to waste my time, so I kept doing South Indian films in the meantime and I have done a German film too. But I will never leave South Indian movies.