Kamal Haasan
— Thenali Soman
Jayaram
— Dr. Kailash
Devayani
— Jalaja
Jyothika
— Janaki
Delhi Ganesh
— Dr. Panchabhootam
Charle
— Kanthaswamy
Ramesh Khanna
— Dr. Panchabhootam's Assistant
Madhan Bob
— "Diamond" Babu
Crane Manohar
— Servant
Lavanya
— Raj TV Reporter
Bayilvan Ranganathan
— Police Inspector
Mayilsamy
Anoop Kumar
Meena
— Self (Cameo)
K. S. Ravikumar
— Self (Cameo)
C. R. Vijayakumari
— Mental Patient (Cameo)