Because you like Jane Smith in Mr. & Mrs. Smith

Edward Elric has a quick mind along with a quick temper. See them in Fullmetal Alchemist.

Sasuke's quest for vengeance is above all else. See them in Naruto.

Talented but anxious, Shinji Ikari struggles to bear the challenges that life hands him. See them in Neon Genesis Evangelion.

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.

Armin Arlert was wrong. This world hasn't become hell; it's been hell. He just couldn't see it before. See them in Attack on Titan.