Because you like Daniel LaRusso in The Karate Kid

Cinder has been beaten down by the world, but she's learning that her cyborg abilities are pretty helpful. See them in Cinder .

Steven Universe is an excitable youth who likes junk food and trying to save the world. See them in Steven Universe.

Will Herondale is an emotionally distant bad boy with a secret. See them in Clockwork Angel .

Titus Andromedon will show you the ropes, help you with your problems, and sing at you constantly, whether you like it or not. See them in Unbreakable Kimmy Schmidt.

An ironic hipster with a healthy dose of self-deprecation, Dave strives to be cool at all costs. See them in Homestuck.

Rose Hathaway is a reckless, rebellious smartass who's training to be a royal vampire guardian. See them in Vampire Academy.

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

It's hard to tell if Dean Winchester cares more about saving the world or his 1967 Chevy Impala. See them in Supernatural.