Because you like April O'Neil in Teenage Mutant Ninja Turtles

Emily Fields has been very guarded, careful of whom she trusts and reveals her secrets to. See them in Pretty Little Liars.

Whether it's randomly bursting into song or writing Nancy Drew fan-fiction, Jess proudly marches to the beat of her own drum. See them in New Girl.

With a brilliant mind, an insane level of confidence, and a penchant for drunken dancing, Cristina Yang is a force to be reckoned with. See them in Grey's Anatomy.

Whether he's fighting or flirting, Jace Wayland is all swagger. See them in City of Bones.

Bedside manner is for chumps, not the brilliant Dr. Gregory House. See them in House M.D..

Everyone Barney Stinson knows is getting married or pregnant. But he's just getting more awesome. See them in How I Met Your Mother.

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

Smart and sensitive Sam Winchester tried to escape the family business, but ghosts have a way of haunting you. See them in Supernatural.

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

Charlie Kelmeckis is a wallflower who's starting to blossom into something more. See them in The Perks of Being a Wallflower.

Finn is the world's last human who's "all about" understanding right and wrong. See them in Adventure Time.