Siddharth as Munna

Genelia D'Souza as Harini

Bharath Srinivasan as Babu Kalyanam

S. Thaman as Krishna

Nakul as Juju

Vivek as Mangalam

Senthil as Anna Veriyan

Janaki Sabesh as Munna's mother

Solomon Pappaiah as Judge

Anita Ratnam as Harini's Mother

Subhashini as Babu Kalyanam's Mother

Ilavarasu as Kumar's Father

Chitti Babu as Hari

A. V. Ramanan as Munna's Father

Raviprakash as M. Chandra Shekar

Kalairani as Kumar's Mother

Manikandan as Kumar

Sindhuri as Ankita

Bhuvaneswari as Rani

Manobala as Ajay

Sathyan Sivakumar as Deepu

Ramji as Bhaskar

Delhi Kumar as Judge

A. C. Murali Mohan as

Suryakanth as 'Pimp' Manickam

Hariharan as Himself

Blaaze as Himself as a Music Award Show Host

S. P. Balasubramaniam as Himself as a Music Award Show Host

Vijay Yesudas as Himself as a Music Award Show Host

K. G. Ranjith as Himself as a Music Award Show Host

Rathi Arumugam as Harini (Voice)