Because you like Susanna Kaysen in Girl, Interrupted

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

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

Char is always thinking two or three steps ahead of the enemy. See them in Mobile Suit Gundam Series.

He's a dedicated cop and a nice guy. But James Gordon is learning that Gotham is not a city for nice guys. See them in Gotham.

Dr. Gordon Freeman is a brilliant physicist is a quiet hero. And given all the violent aliens, he better be. See them in Half-Life.

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

Charles Xavier is a telepath who believes mutants and humans are both good at heart and can live in harmony. See them in X-Men Series.

An exuberant prankster, Naruto Uzumaki craves acknowledgement of any kind. See them in Naruto.

Spike Spiegel is a bounty-hunter with a laidback style and lightning-quick moves. See them in Cowboy Bebop.

Dazai Osamu's last goal in life would be to commit double suicide with a beautiful woman. Unfortunately, no one he meets seems to share the same interest. See them in Bungou Stray Dogs.

All who live know his name, and all who oppose him shall know Death. See them in Darksiders Series.

Hiccup Haddock III may be the only Viking nerd in recorded history. See them in How to Train Your Dragon.