Kamal Haasan
Rajaraman Venkatraman (Vasool Raja)
Kamal Haasan
Rajaraman Venkatraman (Vasool Raja)
Prakash Raj
Dr. Vishwanathan
Prabhu
Vatti
Sneha
Janaki Vishwanathan (Paapu)
Nagesh
Sriman Venkatraman
Rohini Hattangadi
Kasturi
Crazy Mohan
Professor Margabandhu
Karunas
Amit
Jayasurya
Zakir
Malavika
Priya
Ajay Rathnam
Medicine Professor
Kavithalaya Krishnan
Surgery Professor
Nithin Sathya
Neelakandan
Chitra Lakshmanan
Dr. Kalidas
Thalaivasal Vijay
Doctor
Santhana Bharathi
Gangadharan
Kaaka Radhakrishnan
Margabandhu's father
A. K. Veerasamy
Hospital cleaner
Madhan Bob
Mani Raja
Vaiyapuri
Piles Patient
E. Ramadoss
Ward Boy
Karate Raja
Raja's sidekick
Sampath Ram
Raja's sidekick
Meera Krishnan
Mani Raja's wife
Kaajal Pasupathi
Nurse
Boys Rajan
Professor
Yatin Karyekar
Anand
Thiruppaachi Benjamin
Pickpocket
Scisor Manogar
Ragasiya
Dancer in the song "Cheena Thaana"
Bharathwaj
Original Music Composer
Kamal Haasan
Playback Singer
Rajkumar Hirani
Original Story
Vidhu Vinod Chopra
Original Story
Vairamuthu
Lyricist
Sathyan Mahalingam
Playback Singer
KK
Playback Singer
Shreya Ghoshal
Playback Singer
Bharathwaj
Playback Singer
Hariharan
Playback Singer
Sadhana Sargam
Playback Singer
Grace Karunas
Playback Singer
Saran
Director
Crazy Mohan
Dialogue
A. Venkatesh
Director of Photography
Suresh Urs
Editor
Mohana Mahendran
Art Direction
K Murari
Executive Producer
A Manohar Prasad
Producer