Nambi Narayanan
Meena Narayanan
Vikram A Sarabhai (Hindi / English Vers
Vikram A Sarabhai (Tamil / Telugu Version)
Geeta Narayanan
Shankar
Arunan
P M Nayar
Unni
Param
L D Gopal
Udupi Ramachandra Rao
Col. Cleaver
Mrs. Cleaver
Professor Luigi Crocco
Studio Personnel
A.P.J. Abdul Kalam
Sartaj
Self (Guest Appearance)
Professor Eugene Scott (as a different name)
Michelle
Brian
Pierre
Alexander Dunayev
Studio Director
Satish Dhavan (Tamil)
French Scientist
Guy at the wedding
Unni's wife
American Agent
Unni's father in law
Elizabeth
M L Sharma
Pacifier
Studio Sound Engineer
Mariam Rashida
Alexa
Kremlin officer
Satish Dhavan (Hindi & English) (as Deepak Kriplani)
Surendran
Sekhar
French Scientist 2
Veer
Crew guy 2
Young Priest
Lightman 1
T.V. Reporter (as Midhun A.E.)
Fauzya Hassan
Aggressor
Doctor at Nambi's house
Real Nambi Narayanan
Anchor's Hmu
Barry Amaldev
Doctor at Latex Guesthouse
Arunan's Friend 1
Bride's mother
Girl Crew
Nambi's brother in law
Officer 1
Arunan's Friend 2
Neil Armstrong
Sven
French Agent
Boyfriend Girl
Yuri
French Scientist 1 (as Yulian)
Professor Chockmark
Marko
Fauzia
John French scientist
Venkatesh Scientist (as Aamir rafiq) (credit only)
Researcher
Neil (uncredited)