Because you like Mia Hall in If I Stay

She's mostly doom and gloom, but you'd get nowhere without Sadness. See them in Inside Out.

He's an eccentric pirate making it up as he goes along. He's Jack Sparrow, savvy? See them in Pirates of the Caribbean: the Curse of the Black Pearl.

With the ocean breeze behind him and the open seas ahead of him, Jack Dawson feels as if he is king of the world. See them in Titanic.

L is enigmatic, child-like, and one of the smartest people in the world. See them in Death Note.

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