Because you like Darcy Lewis in Thor
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.
A responsible kid, Hugo Cabret is still capable of flights of fancy. See them in Hugo.
It's hard enough fighting a war. But it's worse for Commander Shepard, knowing no matter how hard you try, you can't save them all. See them in Mass Effect.
Killua Zoldyck is so tired of killing. He just wants to be a kid, hanging out and doing stuff with his friends. See them in Hunter x Hunter.
Whether she's working as a mild-mannered assistant or an all-powerful superhero, Kara Danvers is defined above all by her huge heart. See them in Supergirl.
Dory is more than a little forgetful, but she'll always remember to have your back. See them in Finding Nemo.
Whether he's performing "illusions" or running the family business, one thing is certain: Gob Bluth will screw it up. See them in Arrested Development.
Whether it's randomly bursting into song or writing Nancy Drew fan-fiction, Jess proudly marches to the beat of her own drum. See them in New Girl.
Bart Simpson is an aspiring juvenile delinquent who doesn't want you to have a cow, man! See them in The Simpsons.
Intelligent and compassionate, Hazel Lancaster would rather face things, even bad things, than sugarcoat the truth. See them in The Fault in Our Stars.