Because you like Grunkle Stan in Gravity Falls

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

When Andrew Neiman is not in classes during the day, he's rehearsing his drums until his hands bleed at night. See them in Whiplash.

Flexibility is more than Helen Parr's superpower. It's a key tenet of her personality that allows her to be both firm and understanding. See them in The Incredibles.

Hawkeye is most comfortable perched above the action, keeping an eye on everything and using a well-timed arrow to save the day. See them in Marvel Cinematic Universe.

Foul mouthed and disturbingly comfortable with violence, Hit-Girl is a precocious assassin who doesn't need anyone's protection. See them in Kick-Ass.

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

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.

He's a troubled insomniac in search of a moment to rest and a meaning to his existence. See them in Fight Club.

Serena van der Woodsen is a wild child. Too wild, her friends and family might argue. See them in Gossip Girl.

A Vietnam vet, Travis Bickle spends his days driving his taxi and watching porn flicks. See them in Taxi Driver.

Ponyboy Curtis is a "Greaser" on the surface, but he's a sensitive poet underneath. See them in The Outsiders.

Liv Moore is a sarcastic high-achiever turned morally conflicted zombie. See them in iZombie.