The Dark Marauder

Voldemort has returned, but when he did so, his taking of Harry's blood awoke something in our young Gryffindor; something dark, twisted and truly malicious to the core; now Harry, calling himself the Joker, seeks to show the world and Hogwarts what a REAL Marauder's Heir can do: after all, it's only a joke; what harm can a joke do? Dark Harmony; AU OOTP onwards