Jim Sarbh
as Homi Bhabha
Ishwak Singh
as Vikram Sarabhai
Regina Cassandra
Rajit Kapur
Arjun Radhakrishnan
K.S. Sridhar
as K Karnad
Dibyendu Bhattacharya
as Raza Mehdi
Saba Azad
as Parvana Irani
Namit Das
as Prosenjit Dey
K.C. Shankar
as Vishwesh Mathur
Rajiv Kachroo
as JRD Tata
Darius Shroff
as Jehangir Bhabha
Sandeep Chatterjee
as Bholanath Mullick
Mark Bennington
as Robert Crowley
Sammy Jonas Heaney