Because you like Brian Griffin in Family Guy

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.

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

Let's just say Sheldon Oberon is having an out-of-body experience like no other. See them in Jumanji.

A crooked cop, Harvey Bullock is the product of a not-so-just criminal justice system. See them in Gotham.

They say they saved Adam Jensen by turning him into a cyborg, but he's not sure saved is the right word. See them in Deus Ex Series.

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

A self-professed psychopath, James kills small animals for fun. After getting bored of that, he is ready for an ambitious murder. See them in The End of the F World.

Anyone who's said "Don't worry, it's just a dream" never met Freddy Krueger. See them in A Nightmare on Elm Street.

All the world's a stage, and Missy Piggy's never one to give up the spotlight. See them in The Muppet Movie.

A champion of chivalry, Don Quixote is dutifully bringing good to the world—even when others think he's out of his mind. See them in Don Quixote.

Firo Prochainezo is swept up in a world of mysterious women, alchemists, and rumors of a wine that makes it drinkers immortal. See them in Baccano!.

Just because Dracula wants to suck your blood doesn't mean he's not a gentleman. See them in Dracula.