Because you like Arnold in Hey Arnold!

David Nolan is a noble fairy tale prince with the heart of a hero, regardless of whether he can remember his past or not. See them in Once Upon a Time.

The witty Aku would be an ideal dinner guest, if he weren't a demon. See them in Samurai Jack.

Frank Reynolds is too gross even for the prostitutes he hires. See them in It's Always Sunny in Philadelphia .

A meek schoolteacher, Mary Margaret Blanchard can't remember her past as a spirited, swashbuckling Snow White. See them in Once Upon a Time.

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

Louise Belcher might be just a kid, but she can manipulate just about anyone with a pulse. All in the name of fun, of course. See them in Bob's Burgers.

C is for cookie, and that's more than good enough for him. See them in Sesame Street.

Philip J. Fry accidentally cryogenically froze himself for a millennium. See them in Futurama.

Eric Forman's interests include smoking weed, collecting Luke Skywalker memorabilia, eating Fatso burgers, and making his dad mad. See them in That '70s Show.