Because you like Mrs. Krabappel in The Simpsons

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

This cannibalistic villain may be a loner, but Killer Croc doesn't have problems with self-confidence. See them in Suicide Squad.

Anya Jenkins has a real harsh bark to go with her demonic bite. See them in Buffy the Vampire Slayer.

Chuck Bartowski is a sweet, laid-back electronics store/top secret government employee. See them in Chuck.

Haley Dunphy's interests include shopping, dating, and avoiding homework at all costs. See them in Modern Family.

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

Frank Ginsberg is the number one Proust scholar in the world, but he recently failed at committing suicide. See them in Little Miss Sunshine.

This bite-sized, power-hungry plankton is determined to uncover the secret recipe for the Krusty Krab burger. See them in SpongeBob SquarePants.

A charming acapella performer, Jesse Swanson perfectly blends being nerdy with being cool. See them in Pitch Perfect.

Mac is a karate-chopping, beer-chugging schemer. See them in It's Always Sunny in Philadelphia .

A stylish agent, Agent J would rather improvise than play by the rules. See them in Men in Black.

As Marlena Rosenbluth is finding out, confidence in the limelight doesn't always translate to power at home. See them in Water for Elephants.