Because you like Mrs. Krabappel in The Simpsons

Liesel Meminger is trying to ease the suffering of those around her, German and Jew alike. See them in The Book Thief.

A formerly adventurous playboy, Will Traynor has become cynical by what life has thrown at him. See them in Me Before You.

There's magic behind Tara Maclay's quiet façade. See them in Buffy the Vampire Slayer.

Romantic, impulsive, and captivated by the joys of life, Natasha Rostova is on the messy path of growing up. See them in War and Peace.

James Wilson is a compassionate doctor who willingly plays the sidekick. See them in House M.D..

In Dennis Reynolds' mind, only a psycho wouldn't have a six-part system to bring home women. And he should know. See them in It's Always Sunny in Philadelphia .

The ever-cheerful Tonks can change her appearance at will, but she can't seem to get rid of her clumsiness. See them in Harry Potter Series.

A powerful mob boss, Vito Corleone is always making offers people can't refuse. See them in The Godfather.

Molly Weasley runs a household teeming with magic: gnomes run around the garden, dishes wash themselves, and noisy ghouls rule the attic. See them in Harry Potter Series.

Ratchet is a shoot-first, ask-questions-later, and then-shoot-again kind of lombax. See them in Ratchet & Clank.

Nick Miller might not have a bank account, but he defintely has a lot of love to give. See them in New Girl.

Just call Jeff Lebowski The Dude. Or His Dudeness, Duder, or El Duderino if you're not into that whole brevity thing. See them in The Big Lebowski.