Because you like Tommy DeVito in Goodfellas

While Cassie Ainsworth's head is always in the clouds, her heart is always in the right place. See them in Skins.

When their organization was infiltrated by evil HYDRA, who was the one guy Captain America trusted? A former soldier with kickass wings named Sam Wilson. See them in Marvel Cinematic Universe.

With a brilliant mind, an insane level of confidence, and a penchant for drunken dancing, Cristina Yang is a force to be reckoned with. See them in Grey's Anatomy.

Emily Fields has been very guarded, careful of whom she trusts and reveals her secrets to. See them in Pretty Little Liars.

Lorelai Gilmore loves coffee, talking fast, flirting, movie marathons, and her daughter. See them in Gilmore Girls.

A wildly brilliant detective, Sherlock Holmes can figure out everything except how to interact with other human beings. See them in Sherlock.

Charlie Kelmeckis is a wallflower who's starting to blossom into something more. See them in The Perks of Being a Wallflower.

Bedside manner is for chumps, not the brilliant Dr. Gregory House. See them in House M.D..

Po is a clumsy, friendly panda who likes to take it easy. But now he's expected to save the world? See them in Kung Fu Panda.

Stewie Griffin is just your average evil-genius, talking, sociopathic baby. See them in Family Guy.

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