Because you like Optimus Prime in Transformers
Mikasa Ackerman is a near-perfect soldier who won't break her stone-faced expression whether she's killing foes or protecting loved ones. See them in Attack on Titan.
An opportunistic fugitive-turned-bounty-hunter, Faye Valentine uses both grit and her good looks to get ahead. See them in Cowboy Bebop.
Belle has ready every storybook in town, and she's slowly realizing that life is no fairytale. See them in Beauty and the Beast.
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.
Good fashion? Check. Snarky quips? Check. Supernatural evil-fighting powers? Also check. See them in Buffy the Vampire Slayer.
Bedside manner is for chumps, not the brilliant Dr. Gregory House. See them in House M.D..
If Lisbeth Salander can hurt a bastard who deserves it by digging up stuff about him, she feels good. See them in The Girl with the Dragon Tattoo.
Empathetic Nausicaa embraces all forms of life, even those that might scare other people. See them in Nausicaa of the Valley of the Wind.
Regina Mills is a cold evil queen turned chilly town mayor. See them in Once Upon a Time.
Elaine Benes is a tough New Yorker who can hang with the guys, and date the ones who are "sponge-worthy." See them in Seinfeld.
Experiment 626 was designed for one thing: to destroy everything he touches. See them in Lilo & Stich.