Because you like Princess Bubblegum in Adventure Time
Lelouch vi Britannia is a high school student by day, masked destroyer of tyrannical empires by night. See them in Code Geass.
Rebecca Bunch struggles with decision making. So much so that she chases her high school boyfriend across the country to win him back. See them in Crazy Ex-Girlfriend.
Leonard "Bones" McCoy is passionate, moral, and ready to stitch you back together. See them in Star Trek.
After becoming accepted into the group of popular girls, Tracy Freeland has turned from a sweet and reserved teenager into a monster. See them in thirteen.
Hoban Washburne shows you can be a hotshot space pilot *and* play with dinosaurs. See them in Firefly.
Calling Alicia Florrick a "good wife" is damning this smart, capable, thoughtful woman with too-faint praise. See them in The Good Wife.
While Jay Gatsby doesn't necessarily like to attend his parties, he knows how to throw a world-class bash. See them in The Great Gatsby.
Anyone who's said "Don't worry, it's just a dream" never met Freddy Krueger. See them in A Nightmare on Elm Street.
After finding a mysterious object in one of the many rooms in her father's mansion, Bulma is inspired to discover its secrets. See them in Dragon Ball.
Genetically and cybernetically enhanced, Gamora was trained from birth to be one of the deadliest women in the galaxy. See them in Marvel Cinematic Universe.