Munna Bhai was first introduced in the 2003 film Munna Bhai M.B.B.S. which involves his adventures as a faux-medical student, who finally tells the truth about himself and learns to help people along the way.
In the second movie, Lage Raho Munna Bhai, Munna Bhai becomes a faux-professor. He begins, thereafter to see the image of Mahatma Gandhi who persuades him to stop pretending he is a professor and who teaches him to help other people solve their problems through Gandhism, which Munna Bhai terms Gandhigiri.
A third movie in the installment, and possibly the last one, titled Munnabhai Chale Delhi has been announced by producer Vidhu Vinod Chopra. It will be directed by Subhash Kapoor, and was expected to go on floors late 2013.