New Delhi, Dec 20 (ANI): Bollywood actor Abhishek Bachchan, who has been a constant hero in the Dhoom series, says that he and his co-star Uday Chopra are like 'Batman and Robin'. "Pardon the immodesty, but Uday Chopra and I are Dhoom. The franchise chronicles the ongoing adventures of Jai and Ali, that's me and Uday. That's the format of the franchise. The other characters may come and go. But we go on forever. Like Batman and Robin. Can there be a Batman franchise without Batman?", Abhishek asked.