Pappu / Vichu
S. J. Suryah
Priya
Simran
Teacher (Cameo Appearance)
Ravi Mariya
Sivagami Maami
Kiran Rathod
Indira / Pappu's Mother
Devayani
Priya's Friend Seema
Aishwarya Bhaskar
Priya's Father
Nassar
Scientist 'Science'
Manivannan
Vishwanathan a.k.a. X
Karunas
Doctor
Janagaraj
Sathyam
Brahmanandam
Editor
Anthony
Producer
Director
Dialogue
Screenplay
Story
Original Music Composer
A.R. Rahman
Director of Photography
K. V. Guhan