Because you like Kate Beckett in Castle

Not only will Emmett Brown's time-saving gadgets help you travel with ease, his tinkering on your car will help you get wherever you need to go. Fast. See them in Back to the Future.

This mathematical genius doesn't have time for small talk; Alan Turing needs to break Enigma, the Nazi's cipher machine. See them in The Imitation Game.

Columbus can't trust anyone. The first girl he let into his life tried to eat him. See them in Zombieland .

Told her son will one day save the world, Sarah Connor dedicates her life to training him to do just that. See them in The Terminator.

Reckless, vulgar, loud-mouthed: that's what makes Amethyst so awesome. See them in Steven Universe.

A premier member of the leather cat-suit club, Selene can chill you with a stony look, or ice you with her ninja moves. See them in Underworld.

Petyr Baelish's main assets? A sharp mind, deep pockets, and no scruples. See them in Game of Thrones.

Jackie Burkhart is a privileged princess with a healthy dose of self-confidence. See them in That '70s Show.

A star student destined for Princeton, nerdy Devi Vishwakumar dreams of losing her virginity to a stone-cold hottie who can "rock her all night long." See them in Never Have I Ever.

Clay Jensen's friend Hannah is gone, and he is determined to find out why even if that brings him pain. See them in Thirteen Reasons Why .

Sarah Kerrigan is pretty much the Queen Bitch of the Universe. See them in StarCraft .