| Person | Type | Job | Role(s) |
|---|---|---|---|
 A.R. Rahman | Crew | Sound | Original Music Composer |
 K. S. Ravikumar | Crew | Directing | Director, Screenplay |
 Kamal Haasan | Crew | Sound | Playback Singer |
 Priyan | Crew | Camera | Director of Photography |
 Sadhana Sargam | Crew | Sound | Playback Singer |
 Shankar Mahadevan | Crew | Sound | Playback Singer |
 Crazy Mohan | Crew | Writing | Dialogue |
 Maniraj | Crew | Art | Art Direction |
 Thamarai | Crew | Writing | Lyricist |
 P.L. Thenappan | Crew | Production | Co-Producer |
Piraisoodan | Crew | Writing | Lyricist |
 Pa. Vijay | Crew | Writing | Lyricist |
 S. P. Balasubramaniam | Crew | Sound | Playback Singer |
Clinton Cerejo | Crew | Sound | Playback Singer |
Vikram Dharma | Crew | Crew | Stunt Coordinator |
Suresh Merlin | Crew | Camera | Still Photographer |
Thanigachalam | Crew | Editing | Editor |
B.H. Tharun Kumar | Crew | Crew | Choreographer |
 Chithra Iyer | Crew | Sound | Playback Singer |
 K. S. Chithra | Crew | Sound | Playback Singer |
 Hariharan | Crew | Sound | Playback Singer |
 Sujatha Mohan | Crew | Sound | Playback Singer |
Kalai Kumar | Crew | Writing | Lyricist |
Sharanya Srinivas | Crew | Sound | Playback Singer |
Gopika Poornima | Crew | Sound | Playback Singer |
Arivumathi | Crew | Writing | Lyricist |
Ilayakamban | Crew | Writing | Lyricist |
R. Karpagam | Crew | Production | Producer |
 Delhi Ganesh | Cast | Actor | Dr. Panchabhootam |
 Devayani | Cast | Actress | Jalaja |
 Jayaram | Cast | Actor | Dr. Kailash |
 Jyothika | Cast | Actress | Janaki |
K. S. Ravikumar | Cast | Actor | Self (Cameo) |
Kamal Haasan | Cast | Actor | Thenali Soman |
 Meena | Cast | Actress | Self (Cameo) |
 C. R. Vijayakumari | Cast | Actress | Mental Patient (Cameo) |
 Charle | Cast | Actor | Kanthaswamy |
 Madhan Bob | Cast | Actor | "Diamond" Babu |
 Mayilsamy | Cast | Actor | |
Anoop Kumar | Cast | ||
 Lavanya | Cast | Actress | Raj TV Reporter |
 Crane Manohar | Cast | Actor | Servant |
 Ramesh Khanna | Cast | Actor | Dr. Panchabhootam's Assistant |
 Bayilvan Ranganathan | Cast | Actor | Police Inspector |
B. H. Abdul Hameed | Cast | Actor | |
| Person | Type | Job | Role(s) |
