Anniyan
Unable to bear the growing corruption in society and rejection from his love interest, a meek lawyer becomes diagnosed with multiple personality disorder due to which the personalities of a vigilante killer and a metrosexual start existing within him.
Vikram
Ramanujam 'Ambi' Iyengar / Remo / Anniyan
Sadha
Nandini Raghuram
Prakash Raj
DCP Prabhakar
Vivek
Chari Singari
Nedumudi Venu
Parthasarathy Iyengar
Nasaar
Psychiatrist
Cochin Haneefa
Delinquent Car Owner
Kalabhavan Mani
House Owner
Charle
Wastrel
Shanmugarajan
Chockalingam
Saurabh Shukla
Break Company Owner
Manobala
Ticket Conductor
Shanthi Williams
Susheela, Ambi's Mother
R. Neelakantan
Ananthanarayanan
Sriranjini
Nandhini's Mother
Vatsala Rajagopal
Ambi's Grandmother
Mohan Vaidya
Krishna
Hari Prashanth
Young Ambi
Citizen Mani
A cook who works under Chockalingam
Yana Gupta
Special Appearance in "Kaadhal Yaanai" Song
Kaniha
Nandini Raghuram (Voice)
S. N. Surendar
Parthasarathy Iyengar (Voice)
Meera Krishnan
Nandhini's Mother (Voice)