Because you like Tommy DeVito in Goodfellas

An aloof punk rock goddess, Nana Osaki has a surprisingly big heart. See them in Nana.

Frank N. Furter is just a sweet transvestite with some not-so-sweet plans. See them in The Rocky Horror Picture Show.

With his own ship, Peter Quill calls his own shots, and gets to fly from planet to planet blasting '70s pop hits and picking up alien chicks. See them in Marvel Cinematic Universe.

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

Fun and feisty on the outside, Meredith Grey is dark and twisty on the inside. See them in Grey's Anatomy.

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

When the going gets tough, Rick Grimes gets tougher. It's a very useful trait when the world goes to hell. See them in The Walking Dead.

Ramona Flowers is a delivery girl who's been through her fair share of bad breakups. Super-bad breakups! See them in Scott Pilgrim vs. the World.

A plucky 13-year-old with a flair for the dramatic, Kiki is a witch in training. See them in Kiki's Delivery Service.

There's no one cooler than this intergalactic smuggler who hangs out in dens of iniquity all over the galaxy. And Han Solo knows it! See them in Star Wars Series.

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

An escaped convict on a mission, Sirius Black is brooding, brave, and reckless. See them in Harry Potter Series.