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