Because you like Tara Maclay in Buffy the Vampire Slayer

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

The Terminator is an emotionless killing machine who won't stop until he's changed the future. See them in The Terminator.

A responsible kid, Hugo Cabret is still capable of flights of fancy. See them in Hugo.

An off-beat dork, John Egbert is funny, inventive, and endlessly optimistic. See them in Homestuck.

Abandoned by her parents, Rey made her living selling scrap metal and got used to being her own friend and teacher. See them in Star Wars Series.

Cher Horowitz may have a problem with hubris, but she looks utterly fabulous while learning a lesson about the dangers of meddling. See them in Clueless.

Juno MacGuff is hoping sarcasm will get her through the stress of teenage life. And also, teenage pregnancy. See them in Juno.

A vampire hunter, Integra Hellsing doesn't tolerate failure, least of all her own. See them in Hellsing.

Trevor Phillips is an unpredictable maniac who tortures people for no reason. See them in Grand Theft Series.

When push comes to shove, the usually overly cautious Luigi has the heart of a hero. See them in Super Mario Bros..

Optimus Prime is a shapeshifting sentient robot leading a team of robots to stop evil from taking over. See them in Transformers.