Because you like Bobby Singer in Supernatural
Finn is the world's last human who's "all about" understanding right and wrong. See them in Adventure Time.
A great galactic bounty hunter, Samus Aran is not as good at expressing emotions. See them in Metroid.
Community-driven but practical, Calvin Palmer is a natural leader even if he doesn't always see it. See them in Barbershop.
Seth is short-tempered, crude, and terrible at school, but hopefully there's nothing an epic party can't fix. See them in Superbad.
A crabby troll, Karkat Vantas is perpetually angry about his lot in life. See them in Homestuck.
Everyone is just a chess piece, and Izaya Orihara is a master player. See them in Durarara!!.
The main priority for Nagisa Hazuki is making sure that everyone has fun. See them in Free! Iwatobi Swim Club.
There are a lot of rules in their society for women like Emily Dickinson. But Emily is a rule-breaker. See them in Dickinson.
A fourth grader without a moral compass, Eric Cartman lives on KFC, Taco Bell, Pizza Hut, and Cheesy Poofs. See them in South Park.
Emmet Brickowski is so upbeat it's not even human. Everything is AWESOME! See them in The Lego Movie.