Because you like Eponine in Les Miserables
Shana is a red-haired warrior with a black-and-white worldview. See them in Shakugan no Shana.
Darlene is a free-spirited hacktivist who follows her own moral compass. See them in Mr. Robot.
Nicholas Angel is super-dedicated to his job as a police officer. Maybe a little too dedicated. See them in Hot Fuzz.
Walter White's knowledge of chemistry allows him to cook astoundingly pure meth, leading to a rapid – albeit tumultuous – rise in the criminal drug world. See them in Breaking Bad.
Michael Bluth is the only sane person in a family of eccentrics. At least, that's how he thinks of himself. See them in Arrested Development.
Louis de Pointe du Lac is wanting to find a way of living that doesn't make him miserable. See them in Interview with the Vampire: The Vampire Chronicles.
Frank Reynolds is too gross even for the prostitutes he hires. See them in It's Always Sunny in Philadelphia .
Penelope Garcia is the smartest ex-con turned FBI tech, but her fashion never fails to raise eyebrows. See them in Criminal Minds.
Ultron is security software turned evil mastermind. See them in Marvel Cinematic Universe.
Handsome Jack is wearing a mask of his own face to hide his scarred real one. See them in Borderlands Series.
Megamind is searching for purpose in a supervillain life without a superhero to fight. See them in Megamind.
Insightful about everyone else's neuroses, Rose Lalonde is not as aware of her own. See them in Homestuck.