Because you like Randy Marsh in South Park
Waylon Smithers would do anything for his boss, and would love to do a few things *to* him. See them in The Simpsons.
Relentlessly cheery Ned Flanders enjoys a nice piece of bread with water on the side for dipping See them in The Simpsons.
Gene Belcher dreams of a future in the limelight, and he doesn't let his lack of talent hold him back. See them in Bob's Burgers.
Trevor Phillips is an unpredictable maniac who tortures people for no reason. See them in Grand Theft Series.
Eugene H. Krabs is a greedy restaurant owner who won't let a dime out of the reach of his claws. See them in SpongeBob SquarePants.
Philip J. Fry accidentally cryogenically froze himself for a millennium. See them in Futurama.
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.
Bob Parr is an ex-superhero now focused on being a dad, but he misses the action. See them in The Incredibles.
Brian Griffin is the most scholarly member of the family—when he's not drunk on martinis. See them in Family Guy.
C is for cookie, and that's more than good enough for him. See them in Sesame Street.