Because you like Cassie Sullivan in The 5th Wave

Elena Gilbert is the quintessential girl-next-door who gets involved with the new "boy" at school. See them in The Vampire Diaries.

A karate master/rocket scientist/squirrel, Sandy Cheeks is the only one who can clean up the other resident's messes in Bikini Bottom. See them in SpongeBob SquarePants.

Nick Carraway is the perfect observer: always there for the events, but never too involved. See them in The Great Gatsby.

White Witch's heart is as frozen as the land she rules. See them in The Chronicles of Narnia.

Like her trusty sword, Arya Stark is tiny but vicious. See them in Game of Thrones.

Stewie Griffin is just your average evil-genius, talking, sociopathic baby. See them in Family Guy.

Jax Teller can be cool or vengeful, calm or wrathful, depending on the situation. See them in Sons of Anarchy.

Manipulative, gorgeous, and sharp as a tack, Blair Waldorf is a classic product of the Upper East Side. See them in Gossip Girl.

The Genie is the perfect buddy, granting every wish we might have and keeping life good-spirited. See them in Aladdin.

Piper Halliwell is the most kind and caring Charmed One. See them in Charmed.

Meat Boy tenaciously throws himself into danger, and when he fails, he immediately gets back up and tries again. See them in Super Meat Boy.

Carrie Bradshaw is a sex columnist addicted to expensive shoes, Cosmopolitan martinis, and unavailable men. See them in Sex and the City.