Actor Arshad Warsi initially hesitated to accept the role of Circuit in 'Munna Bhai MBBS,' fearing it was a supporting part that could harm his career. He was persuaded to take the role by director Rajkumar Hirani and a tarot reader's prediction of the film's success and its positive impact on his career. Warsi also noted that the heroine was replaced during production and his character's name was changed from Khujli to Circuit.