Because you like Ace Ventura in Ace Ventura, Pet Detective

A crabby troll, Karkat Vantas is perpetually angry about his lot in life. See them in Homestuck.

Severus Snape is a misanthropic potions teacher with a vindictive streak. See them in Harry Potter Series.

Academics weren't his strong suit. Luckily, Jesse Pinkman's street smarts are a cut above the rest. See them in Breaking Bad.

Hiccup Haddock III may be the only Viking nerd in recorded history. See them in How to Train Your Dragon.

A fun-loving jokester, Alistair isn't ready for the responsibilities he faces. See them in Dragon Age Series.

Even the smallest person can change the course of the world, if he's brave enough. See them in The Lord of the Rings.

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

Irene Adler has to use both her brains and her body to survive. Luckily, she's usually the most brilliant person in the room. See them in Sherlock.

Convinced that the world is conspiring against him, Tatsuhiro's reconciled himself to his fate as a shut-in. See them in Welcome to the NHK.

Franklin "Mouse" Finbar is a jock paying the price for his mistake. See them in Jumanji.

Mr. Robot always seems to know what to do when others are lost. But can he be trusted? See them in Mr. Robot.

Daria Morgendorffer is so defensive that she actively works to make people dislike her so that she don't feel bad when they do. See them in Daria.