Because you like Chell in Portal Series

Dominic Toretto lives his life "a quarter mile at a time", and he burns through those miles faster than anyone. See them in The Fast and the Furious.

It's easy for Brian O'Conner to fake his way into the world of extreme racing because he's been popping cars since his teenage years. See them in The Fast and the Furious.

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

Due to his eagerness to hang with his kids and general goofiness, Phil Dunphy comes across as the fourth child of his family. See them in Modern Family.

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

Clary Fray's philosophy: dive into the supernatural underworld first and ask questions later. See them in City of Bones.

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.

Rory Gilmore usually can be found with her nose in a book and coffee in hand, talking with her mom as quickly as the words can spill out. See them in Gilmore Girls.

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

Damon Salvatore used to miss being human. Now he can't think of anything more miserable. See them in The Vampire Diaries.