Because you like Mark Watney in The Martian

When the safety of Hyrule is at stake, Princess Zelda does not hesitate to sacrifice herself for the good of the land. See them in The Legend of Zelda.

Edward Elric has a quick mind along with a quick temper. See them in Fullmetal Alchemist.

Greg Heffley will be famous someday, but now he's stuck in class with morons. See them in Diary of a Wimpy Kid.

Light Yagami has a plan to make a better world, and morals won't stop him. See them in Death Note.

Suzy Bishop is only 12, but her withering stare and withdrawn personality are enough to make anyone wilt.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

A childlike space cadet, Brittany Pierce has a surprisingly open-minded spirit. See them in Glee.

Mike Hannigan is a lawyer-turned-pianist who loves to tap into his kooky side. See them in Friends.

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

Patrick Verona is a bad boy who's after a tough girl. See them in 10 Things I Hate About You.

Ted Mosby is a hopelessly romantic architect in search of someone to be the mother of his children. See them in How I Met Your Mother.

In a rag-tag group of kids determined to take down the imperialistic Fire Lord, Katara is the glue that holds them together. See them in Avatar: The Last Airbender.

Free-spirited Annie Hall goes through life saying "La-di-da, la-di-da, la la." See them in Annie Hall.