Duke is a character who believes that heroism and the Robin mantle can exist entirely separate from Batman himself.
Scott SnyderVampires as creatures have evolved over time as different vampire bloodlines have hit different populations of humans. Every once in a while the blood will make something new and mutate into a new species with different powers, abilities, weakness, physical characteristics, and so on. I don't want to give anything away, but there are whole species and branches that date all the way back to pre-modern times.
Scott SnyderFirst of all, what made him [Duke in "Zero Year"] captivating is this sense of somebody who wants to save the city regardless of whether Batman wants to or not, but has been inspired by Batman. He's always been - not combative with Batman or anything - but I think he has a sense that what Robin is and what heroism is in Gotham is something that's inspired by Batman and sort of separate from Batman.
Scott SnyderBeware The Court of Owls, that watches all the time, ruling Gotham from a shadowed perch, behind granite and lime. They watch you at your hearth, they watch you in your bed speak not a whispered word of them or they'll send the Talon for your head.
Scott Snyder