24 Online

Suriya - Athreya / Mani / Sethuraman, Samantha Akkineni - Sathya (as Samantha Ruth Prabhu) , Nithya Menen - Priya (as Nithya Menon) , Saranya Ponvannan - Satyabhama, Ajay - Mithran, Girish Karnad - Sathya's Grandfather, Sathyan - Saravanan, Mohan Ram - Raghu, Charlie - Astrologer, Appukutty - , Sudha - Sathya's Mother, Natarajan Balkrishna - Sathya's uncle, Harshavardhan - Kalai, electrician who works for Athreya, Caroline Koziol - Worker (as Karolina Koziol) , Manngala Radhakrishnan - Athreya mom