Mr Natwarlal (1979)

Embedded with hilarious fun and dangerous action, this fast-paced satirical comedy follows the adventures of Mr. Natwarlal. In his childhood, Natwar is just a young boy living with his beloved older brother and caretaker, Gridharilal (Ajit). However, when his brother, who also happens to be a police officer is framed for bribery by sinister criminal mastermind Vikram (Amjad Khan), Natwar is deeply affected by his own helplessness and inability to rescue his brother. When he grows up, Natwar (Amitabh Bachchan) creates a secret identity for himself, posing as a powerful and mysterious underworld figure named Mr. Natwarlal, determined to slowly but surely exact vengeance on Vikram. Will Mr. Natwarlal succeed in punishing Vikram for all his past crimes?