Because you like Richard Webber in Grey's Anatomy

Peppy and optimistic, Joy is totally lost when it comes to dealing with Sadness. See them in Inside Out.

Basically a giant pillow come to life, Baymax is a medical robot created for the sole purpose of helping people. See them in Big Hero 6.

Make sure not to anger the Hulk or else he will transform into a giant green monstrosity and smash anything in his way. See them in Marvel Cinematic Universe.

A good guy who's made some bad choices, Scott Lang is driven in his quest for redemption. See them in Marvel Cinematic Universe.

Few high school students could be less concerned with labels. See them in Ouran High School Host Club.

Marty McFly is a skateboarder, aspiring rock star, and reluctant time-traveler. See them in Back to the Future.

Aragorn is the one true king, a title he is too humble to accept. See them in The Lord of the Rings.

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

Wolverine is a hot-blooded Canadian with an adamantium skeleton who's the best at what he does. See them in X-Men Series.

Tobias "Four" Eaton is only afraid of four things, but you should probably be afraid of him. See them in Divergent.

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

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.