The scene where a Bollywood director is shown on his set is clearly a parody of Karan Johar and his film Kabhi Khushi Kabhie Gham... (2001).
Story loosely based on the rift between real life dons Dawood Ibrahim and his protege Chhota Rajan. Mohanlal's character based on Real Life Police Commisioner of Bombay Dhanushkodi Sivanandan.
Manoj Bajpai was offered the role of Malik but declined due to date issues.
'Vivek Oberoi' is wearing special makeup in the film which makes his complexion several shades darker than it really is.
Ram Gopal Varma once admitted in a interview that he was inspired by the 1980 release Kalyug starring Shashi Kapoor & Rekha.