Because you like Kevin McCallister in Home Alone

Level-headed Ian Gallagher may be focused on his goals, but he's got a mischievous side too. See them in Shameless.

A dedicated hedonist, Jack Harkness appreciates raunchy stories, stiff drinks, and excellent bottoms. See them in Doctor Who.

A bookish know-it-all with a bossy streak, Hermione Granger always stands up for what she believes in. See them in Harry Potter Series.

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

This high school queen bee has everything, including a genius-level IQ—a fact Lydia Martin keeps hidden to maintain her image. See them in Teen Wolf.

Veronica Sawyer thinks that if you were happy every day of your life you wouldn't be a human being, you'd be a game-show host. See them in Heathers.

Whether it's randomly bursting into song or writing Nancy Drew fan-fiction, Jess proudly marches to the beat of her own drum. See them in New Girl.

Sheldon Cooper is brilliant in every way except, well, interacting with any human being. See them in The Big Bang Theory.

For Dana Scully, sometimes looking for extreme possibilities makes you blind to the probable explanation right in front of you. See them in The X-Files.

Percy Jackson is an ordinary student thrust into the world of myth come alive. See them in Percy Jackson & The Olympians: The Lightning Thief.

Hiccup Haddock III may be the only Viking nerd in recorded history. See them in How to Train Your Dragon.

L is enigmatic, child-like, and one of the smartest people in the world. See them in Death Note.