Siddharth

Munna

Genelia D'Souza

Harini

Bharath Srinivasan

Babu Kalyanam

S. Thaman

Krishna

Nakul

Juju

Vivek

Mangalam

Senthil

Anna Veriyan

Janaki Sabesh

Munna's mother

Solomon Pappaiah

Judge

Anita Ratnam

Harini's Mother

Subhashini

Babu Kalyanam's Mother

Ilavarasu

Kumar's Father

Chitti Babu

Hari

A. V. Ramanan

Munna's Father

Raviprakash

M. Chandra Shekar

Kalairani

Kumar's Mother

Manikandan

Kumar

Sindhuri

Ankita

Bhuvaneswari

Rani

Manobala

Ajay

Sathyan Sivakumar

Deepu

Ramji

Bhaskar

Delhi Kumar

Judge

A. C. Murali Mohan

Suryakanth

'Pimp' Manickam

Hariharan

Himself

Blaaze

Himself as a Music Award Show Host

S. P. Balasubramaniam

Himself as a Music Award Show Host

Vijay Yesudas

Himself as a Music Award Show Host

K. G. Ranjith

Himself as a Music Award Show Host

Rathi Arumugam

Harini (Voice)