Because you like Shizuo Heiwajima in Durarara!!

Suzy Bishop is only 12, but her withering stare and withdrawn personality are enough to make anyone wilt. See them in Moonrise Kingdom.

You wouldn't know it by looking at her, but beneath Sheila Jackson's sweet, motherly exterior lies a sex addict. See them in Shameless.

In charge of stocking the office's supply of cigarettes and liquor, Joan Holloway could run the whole company if they would let her. See them in Mad Men.

Brian Robeson is a true survivor through and through. See them in Hatchet.

Sabriel is smart enough to understand the dangers that await her and brave enough to face them anyway. See them in Abhorsen Series.

In Ziva David's world, you grow up fast; you don't have a choice. See them in NCIS.

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

Nomi Marks is a brilliant hacker with an open-minded, accepting spirit. See them in Sense8.

When a half-breed breaks the rules, John Constantine deports them straight back to hell. He's trying to buy his way into heaven. See them in Constantine.

If you believe if fairies, you better believe in Tinkerbell. See them in Peter Pan.

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.

Tarzan is walking the line between human and animal. Good thing he has excellent balance. See them in Tarzan.