Hrithik Roshan, Priyanka Chopra, Sanjay Dutt, Rishi Kapoor

Esha Deol as Tanya Vinod Khanna as Abhay Pratap Rishi Kapoor as Altaf Zardari Arjan Bajwa as Jai Chandan Roy Sanyal as Kuki Sudhanshu Pandey Dharmendra as Anthony Farooq Sheikh as Ravi Kapoor Hema Malini Deepti Naval Johny Lever Gurbachan Madhoo Salman Khan (Cameo)

Shahrukh Khan as Shekhar Subramaniam / G.One Kareena Kapoor as Sonia Shekhar Subramaniam Arjun Rampal as Ra.One Armaan Verma as Prateek Subramaniam a.k.a. Lucifer Shahana Goswami as Jenny Nayar Satish Shah as Iyer Dalip Tahil as Barron Tom Wu as Akashi Suresh Menon Sanjay Dutt (Cameo as "The Villianous Villain - Khalnayak") Priyanka Chopra (Cameo as "The Damsel in Distress")