Because you like Number Six in Battlestar Galactica

Tobias "Four" Eaton is only afraid of four things, but you should probably be afraid of him. See them in Divergent.

Peppy and optimistic, Joy is totally lost when it comes to dealing with Sadness. See them in Inside Out.

Whatever Sakura Haruno lacks in power, she makes up for in intelligence and bravery. See them in Naruto.

Marty McFly is a skateboarder, aspiring rock star, and reluctant time-traveler. See them in Back to the Future.

A good guy who's made some bad choices, Scott Lang is driven in his quest for redemption. See them in Marvel Cinematic Universe.

Winry Rockbell is an energetic tomboy mechanic with an empathetic streak. See them in Fullmetal Alchemist.

Just a hint of human emotion lurks under the enigmatic exterior of Rei Ayanami. See them in Neon Genesis Evangelion.

Finn is the world's last human who's "all about" understanding right and wrong. See them in Adventure Time.

There are certain souls the surprisingly sensitive Death would rather not reap. See them in The Book Thief.

Nemo is a small fish in a vast ocean, but he dreams of seeing it all. See them in Finding Nemo.

Ponyboy Curtis is a "Greaser" on the surface, but he's a sensitive poet underneath. See them in The Outsiders.

Po is a clumsy, friendly panda who likes to take it easy. But now he's expected to save the world? See them in Kung Fu Panda.