நண்பன்

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

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