Because you like Saruman in The Lord of the Rings

R2-D2 has been in the galaxy saving business for decades. Not bad for somebody whose vocabulary is limited to "beep-boop." See them in Star Wars Series.

Fiery and adventurous, Amy Pond is the sort of woman you'd want by your side on a journey through time and space. See them in Doctor Who.

With a song always on her lips and her heart on her sleeve, Maria von Trapp is the governess every kid dreams of. See them in The Sound of Music.

Howard Wolowitz is an engineer whose serious mommy issues somehow haven't dimmed his confidence. See them in The Big Bang Theory.

Danny Zuko's car is auto-matic. Its system-matic. Its hyyyyydro-matic. Why, its greased lightning! See them in Grease.

Vincent Vega likes a good steak, a cheap milkshake, and killing a target without anything going wrong. See them in Pulp Fiction.

Samantha Jones is a try-sexual who'll try anything once. See them in Sex and the City.

Michael Bluth is the only sane person in a family of eccentrics. At least, that's how he thinks of himself. See them in Arrested Development.

A malevolent dark wizard, Voldemort is so fearsome that he's known primarily as "He Who Must Not Be Named." See them in Harry Potter Series.

Christine Daae has been secretely taking lessons from a phantom musician. It sounded less creepy in her head. See them in The Phantom of the Opera.