Because you like Arthur Dent in The Hitchhiker's Guide to the Galaxy

Derek Shepherd is a talented and passionate neurosurgeon. Some people call him McDreamy. See them in Grey's Anatomy.

Caleb Rivers is a bad boy with a good reason for acting out. See them in Pretty Little Liars.

Pengiuns, turtles, and all things scientific is where Sam's expertise lies. Girls are uncharted territory, but Sam is trying to branch out. See them in Atypical.

While he might drive colleagues crazy with his antics, Jake Peralta cares about the Nine-Nine more than most things. Including personal hygiene. See them in Brooklyn Nine-Nine.

A short-tempered guy, Bowser is determined to wreak havoc on the Mushroom Kingdom. See them in Super Mario Bros..

Ferociously independent and wickedly smart, Fiona Goode is a Supreme Witch who truly reigns supreme. See them in American Horror Story.

Introverted Kira Yukimura is sweet, bubbly, and eager to make friends. See them in Teen Wolf.

Krusty The Clown somehow makes life sillier and more somber at the same time. See them in The Simpsons.

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.

Alison DiLaurentis believes you're always better off with a really good lie. See them in Pretty Little Liars.

Jo Wilson is an accomplished doctor who's getting over her past. See them in Grey's Anatomy.

An inter-dimensional demon, Bill Cipher dreams of a more chaotic Gravity Falls. See them in Gravity Falls.