Because you like Caleb Rivers in Pretty Little Liars
Vengeance is William Wallace’s game. With his father, brother, and wife killed by the English, he slaughters the garrison and sacks cities. See them in Braveheart.
Hans Landa doesn't seem to have issues with Jews, but he hunts them because he's determined to do his job well. See them in Inglourious Basterds.
Rukia Kuchiki is a cool and collected warrior who has trouble opening up to anyone. See them in Bleach.
Although Jareth seems like he's just a harmless romantic, his powers make him a formidable foe. See them in Labyrinth.
Misato Katsuragi is never without a beer in her hand or her pet penguin by her side. See them in Neon Genesis Evangelion.
Fox McCloud leads a team of pilots through the Lylat System in search of the evil genius Andross, the villain that killed his father. See them in Star Fox.
For Sly Cooper, stealing isn't just about the haul. It's also about the journey. See them in Sly Cooper.
Stewie Griffin is just your average evil-genius, talking, sociopathic baby. See them in Family Guy.
If you hang out with Bender in cool dive bars in 31st century New York, make sure you're on his "Do Not Kill" list. See them in Futurama.