Because you like Moe Szyslak in The Simpsons
Aang is already a master airbender and once he learns to manipulate water, earth, and fire, he'll be truly unbeatable. See them in Avatar: The Last Airbender.
It turns out the girl of your dreams just might have dreams of her own. See them in (500) Days of Summer.
Sheldon Cooper is brilliant in every way except, well, interacting with any human being. See them in The Big Bang Theory.
Steve Rogers is a good soldier. But above all, he's a good man. See them in Marvel Cinematic Universe.
Phil Coulson is a deadly field agent with the demeanor of a friendly dad. See them in Marvel Cinematic Universe.
John Locke is an eerily calm, confident believer in the magic of the island that gave him his legs back. See them in Lost.
With the ocean breeze behind him and the open seas ahead of him, Jack Dawson feels as if he is king of the world. See them in Titanic.
Peppy and optimistic, Joy is totally lost when it comes to dealing with Sadness. See them in Inside Out.
Tiffany Doggett is usually a nice, good Christian. Just don't get her riled up! See them in Orange Is The New Black.
Christian Grey is just as controlling in the bedroom as the boardroom. See them in Fifty Shades of Grey.
Imperator Furiosa is a badass patriarchy toppler. She'll do anything to secure a better, freer future for the women she cares for. See them in Mad Max: Fury Road.