Mahesh Bhatt had planned his 1993 gangster drama, Sir, with Sadashiv Amrapurkar playing the main baddie, Chhappan Tikli, and Gulshan Grover as his demented but dangerous younger brother, modeled on a character from The Godfather series. But just three days before the film was to roll, Sadashiv pointed out to Bhatt that in a crowd of 'serious' actors like Naseeruddin Shah, Paresh Rawal and him, a 'commercial' actor like Gulshan stood out and should be replaced. After the success of Sadak and his character Maharani, Sadashiv had begun to feel that Gulshan was not on par with the so-called talent quotient of the rest of the cast,Unaware of this, Gulshan had got himself clicked wearing his son's bermudas and came to Bhatt with the photographs wondering if he'd got the 'look' of his character right. He was told that he had been elevated in the cast and would be playing Chhappan Tikli. The younger mentally challenged brother was now turned into a woman's role and played by Sushmita Mukherjee, Sadashiv Amrapurkar was replaced due to his behavior.

Mahesh Bhatt wanted Deepak Tijori in the film, but later signed Atul Agnihothri.

Odh Ke Andhera" from Sir (1993) antras were made into "Mujhe Rana Ji Maaf Karna" from Karan Arjun (1995).

. "Yaad Mein Teri" in MERE MEHBOOB (1963) and "Band Hothon Se Jo Ek Baat" in SIR (1993) sound the same.