Robin Hood meets Dracula.
I mean, come on, they're both pretty cool. And it would work based off of the canon: Dracula is old enough to be around at whatever time Robin Hood existed. Maybe Prince John is loosely related to him, since they're both royalty. Or maybe the Sheriff of Nottingham sends for him to assassinate Robin Hood as a special mission.
And maybe Robin could end up shooting him in the heart with an arrow shaft in order to kill him.
(ok, loosely based off the canon. Dracula never left Transylvania until the late 20th century, I know. But sticking to the canon isn't nearly as cool, now is it?)