Actor Amitabh Bachchan has revealed that he will play a cameo role in Akshay Kumar's upcoming film 'Padman'. The film is based on Arunachalam Muruganantham, a man who made sanitary pads accessible to the women of his village. Directed by R Balki and produced by Akshay's wife Twinkle Khanna, the film will also star Sonam Kapoor and Radhika Apte.