நண்பன்

Sathyaraj as Virumandi Santhanam (Virus) S. J. Suryah as Panchavan Pariventhan Uma Padmanabhan as Mrs. Ramakrishnan Ajay Rathnam as Panchavan Pariventhan's father Atlee as Appearance in “Asku Lasku” Song Adukalam Naren as Ramakrishnan Indrans as Govindan Andrea Jeremiah as Ria Santhanam (voice) விஜய் as Panchavan "Pari" Pariventhan / Kosaksi "Pappu" Pasapugazh Anuya Bhagvath as Shwetha Santhanam Manobala as Librarian Bose Balaji Venugopal as Ragging Senior Jiiva as Sevarkodi Senthil Srikanth as Venkat Ramakrishnan Ileana D'Cruz as Ria Santhanam Sathyan Sivakumar as Srivatsan (Silencer) T.M. Karthik as Rakesh 'Price Tag'

Shankar Director, Dialogue, Screenplay Vijay Prakash Playback Singer Pa. Vijay Lyricist Harris Jayaraj Original Music Composer Chetan Bhagat Novel Anthony Editor T. Muthuraj Art Direction Na. Muthu Kumar Lyricist Sunidhi Chauhan Playback Singer Krish Playback Singer Atlee Assistant Director Farah Khan Choreographer Abhijat Joshi Original Story Vidhu Vinod Chopra Original Story Javed Ali Playback Singer Chinmayi Sripaada Playback Singer Madhan Karky Dialogue, Lyricist Viveka Lyricist Rajkumar Hirani Original Story