Because you like Ellis Boyd "Red" Redding in The Shawshank Redemption

A bloodsucker, Carlisle Cullen is actually more likely to give you a blood infusion. See them in Twilight.

When the safety of Hyrule is at stake, Princess Zelda does not hesitate to sacrifice herself for the good of the land. See them in The Legend of Zelda.

Courteous, dangerous, and powerful, Kaname Kuran controls an entire court of vampires. Very, very pretty vampires. See them in Vampire Knight.

Boomerang is equally skilled at tossing boomerangs and tossing back beers. See them in DC Extended Universe.

No one else in fsociety can hack like Elliot Alderson, but the battles being waged in his head are often more than he can handle. See them in Mr. Robot.

David Nolan is a noble fairy tale prince with the heart of a hero, regardless of whether he can remember his past or not. See them in Once Upon a Time.

Moana is brave, adventurous, and dutiful. And with the ocean on her side, there's no telling how far she'll go. See them in Moana.

For Wreck It Ralph, it's not easy being the bad guy. Especially when you've been designed to destroy but really desire love. See them in Wreck-It Ralph.

For now Lindsay Weir is a geek, but who knows? Maybe she fits in better with the freaks. See them in Freaks and Geeks.

When dealing with a half-demon partner and a world of violence, Kagome Higurashi has plenty of chances for her true courage to shine. See them in Inuyasha.

Clary Fray's philosophy: dive into the supernatural underworld first and ask questions later. See them in City of Bones.

One of the best in the magical world, Mad-Eye has the battle scars to prove his dedication to such a dangerous job. See them in Harry Potter Series.