Because you like Mark Watney in The Martian

John Yossarian is trapped in irony as he must be insane to leave the war but if he does try to leave, he'll be deemed sane and will be forced to stay, See them in Catch-22.

The destroyer, Drax lives for one thing and one thing only: revenge. See them in Marvel Cinematic Universe.

Beca Mitchell fancies herself an edgy loner, but it turns out being part of a group can be aca-amazing. See them in Pitch Perfect.

Simon Belmont is a vampire hunter bravely carrying on the family business. See them in Castlevania.

A contemptuous aristocrat, Violet Crawley is unafraid to exert her authority and voice her opinions, no matter how harsh they are. See them in Downton Abbey.

Teddy Sanders loves his frat brothers so much he might never leave school. See them in Neighbors.

Holden Caulfield is convinced that the whole adult world is full of phonies. See them in The Catcher in the Rye.

Self proclaimed, Fat Amy, likes horizontal running and mermaid dancing. Important skills, one could argue. See them in Pitch Perfect.

Miss Havisham is the creepiest old rich lady in town. See them in Great Expectations.

A resourceful ship systems engineer, Isaac Clarke does his best to batttle the infection spreading across space. See them in Dead Space.

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

Tony Stark's interests include cocktails, beautiful women, particle physics, and saving the world. See them in Marvel Cinematic Universe.