Amitabh Bachchan as Prof. Arvind Chaturvedi[5] Ranbir Kapoor as Shiva Tripathi[6] Alia Bhatt as Isha Mishra Mouni Roy as Damayanti Singhania Nagarjuna Akkineni as Ajay Vashisht, an archaeologist Dimple Kapadia as Anita Saxena[7] Ayan Nayak as Police officer [8] [9] Shah Rukh Khan as a scientist (special appearance)[10]