Because you like Wendy Testaburger in South Park
Donkey is proof that if you're annoying enough you can change the world; he's the reason that his friend Shrek does, well, anything. See them in Shrek.
Jesse Aarons' frustration can only find outlet in another world. See them in Bridge to Terabithia.
Underneath Fakir's sarcastic exterior is a loyal friend. But his loyalty borders on being possessive of his friends. See them in Princess Tutu.
A place as peaceful and enlightened as Piltover has no tolerance for a criminal like Jinx. See them in League of Legends.
Mabel Pines loves sparkles, animals, friendship, and fun. See them in Gravity Falls.
Carol Aird is driven to fight to make her life better, regardless the consequences. See them in Carol.
Garnet is a Crystal Gem who'll protect her friends with her life. See them in Steven Universe.
Vincent Vega likes a good steak, a cheap milkshake, and killing a target without anything going wrong. See them in Pulp Fiction.
Haley Dunphy's interests include shopping, dating, and avoiding homework at all costs. See them in Modern Family.
A childlike space cadet, Brittany Pierce has a surprisingly open-minded spirit. See them in Glee.
Yuri is living in the afterlife, which takes the form of a high school where no one dies. But if you follow the school's rules and live a "normal" life you vanish. See them in Angel Beats!.
Mark Sloan is the best plastic surgeon and biggest playboy the hospital's ever seen. See them in Grey's Anatomy.