Justin Bieber is a 700 hundred year old vampire from France, who now lives in Canda. He poses as a pop star, and preys on his victims (usually underage girls) through song. He's like a classical vampire, ala Dracula, which means he's only weakened by the Sun, and it does not burn him.
In contrast to most vampires, who shapeshift into bats, rats, mice or wolves, Justin Bieber shapeshifts into a beaver.