Because you like Anakin Skywalker in Star Wars Series

Leonidas is not the kind of king who merely gives orders; rather, he's out on the battlefield fighting alongside his men. See them in 300.

With great power comes great responsibility, but Peter Parker always seems to get the short end of that bargain. See them in Marvel Cinematic Universe.

Not only could Hellboy avenge your death, he'd also have a sense of humor about it and not let it ruin the rest of his night. See them in Hellboy.

A crabby troll, Karkat Vantas is perpetually angry about his lot in life. See them in Homestuck.

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

Altair Ibn-La'Ahad is as much a philosopher and detective as he is a killer. He takes nothing at face value and continually searches for deeper truths. See them in Assassin's Creed Series.

A gruff and hardened professional, Marcus Fenix keeps his emotions buried deep. See them in Gears of War.

A former high school outcast, Rebecca Doppelmeyer is tentatively shaking off her misanthropic personality. See them in Ghost World.

Told her son will one day save the world, Sarah Connor dedicates her life to training him to do just that. See them in The Terminator.

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

Make sure not to anger the Hulk or else he will transform into a giant green monstrosity and smash anything in his way. See them in Marvel Cinematic Universe.

Summer Roberts is privileged and preppy but also surprisingly open-minded and fiercely loyal. See them in The O.C..