Because you like Conker the Squirrel in Conker's Bad Fur Day

Castiel might be an immortal angel, but the human world is still more than a little confusing. See them in Supernatural.

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.

A wildly brilliant detective, Sherlock Holmes can figure out everything except how to interact with other human beings. See them in Sherlock.