Because you like Hal Wilkerson in Malcolm in the Middle

Hell hath no fury like an evil fairy scorned. See them in Maleficent.

When the Sorting Hat touched Draco Malfoy's head, it placed him in Slytherin, a house that has turned out more dark wizards than any other. See them in Harry Potter Series.

He's an eccentric pirate making it up as he goes along. He's Jack Sparrow, savvy? See them in Pirates of the Caribbean: the Curse of the Black Pearl.

L is enigmatic, child-like, and one of the smartest people in the world. See them in Death Note.