Because you like Russia in Axis Powers Hetalia
Red doesn't like to explain herself. She wants her work to do the talking. See them in Transistor.
The Grinch's heart is just too small to appreciate Christmas. See them in Dr. Seuss' How the Grinch Stole Christmas.
Whatever Sakura Haruno lacks in power, she makes up for in intelligence and bravery. See them in Naruto.
Chuckie Finster is a baby afraid of everything from clowns to closets, unless his best friend's by his side. See them in Rugrats.
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.
A majestic ruler, Mufasa is respected throughout the animal kingdom. See them in The Lion King.
Experiment 626 was designed for one thing: to destroy everything he touches. See them in Lilo & Stich.
Leonard Hofstadter is the normal one among his scientist friends, though in fairness that's a low bar. See them in The Big Bang Theory.
The son of Death has an obsession with perfection and symmetry. See them in Soul Eater.
Carol Peletier's credo: your strength comes from who you are, not who you used to be. See them in The Walking Dead.
How is angel Aziraphale supposed to stop the apocalypse when Hell's forces misplaced the Antichrist somewhere? See them in Good Omens: The Nice and Accurate Prophecies of Agnes Nutter, Witch.