Because you like Jennie in Kids

Herion is Mark Renton's favorite drug. He sniffs it, smokes it, swallows it, sticks it up his arse, and injects it into his veins. See them in Trainspotting.

Blunt but anxious, Gretchen Ross bonds most easily with those who have lived tough lives like she has. See them in Donnie Darko.

Not a great influence with her classmates, this 13-year-old "cool girl" likes to shoplift, chug alcohol, and snort crushed pills. See them in thirteen.

Charlie is a Type A theater director dealing with something out of his control: a painful divorce. See them in Marriage Story.

Kevin Khatchadourian is a disturbed, affect-less teen on a dark path. See them in We Need to Talk About Kevin.

Although Theon Greyjoy is treated well, he's still essentially a hostage. And that isn't so easy for him to forgive. See them in Game of Thrones.

Holland March is known to wake up hungover in full bathtubs. See them in The Nice Guys.

Nate Archibald is confident, shrewd and trying to do the right thing. But that isn't always easy on the ruthless Upper East Side. See them in Gossip Girl.

Talking to a stranger on a train is the best decision Jesse Wallace ever made. See them in Before Sunrise.

Helena is a mentally unstable, childish, and completely merciless. And most of all, she's an unstoppable killer. See them in Orphan Black.

Toby Cavanaugh has trouble avoiding being manipulated. See them in Pretty Little Liars.

Can you be reckless and still be in control? Neil McCormick hopes so. See them in Mysterious Skin.