Because you like Donkey Kong in Donkey Kong
Steve Stifler is more than just a dude with a hot mom. He's also rude, profane, and obnoxious. See them in American Pie.
Tracy Turnblad's got rhythm, and she's determined to share her dance moves with the world. See them in Hairspray.
Squidward Tentacles is a pretentious clarinet player in search of peace and quiet. See them in SpongeBob SquarePants.
Mark Zuckerberg has achieved everything he's ever wanted, and he's proving to the world how brilliant he is. But happiness eludes him. See them in The Social Network.
The Ice King is lonely and looking for a princess to sweep him off his feet. See them in Adventure Time.
Though seemingly caring and calm, this motel owner has a mysterious streak of intensity. See them in Psycho.
Leonard Hofstadter is the normal one among his scientist friends, though in fairness that's a low bar. See them in The Big Bang Theory.
Caitlin Snow believes that burying herself in science is the best way to save the day or to mend a broken heart. See them in DC Extended Universe.
Empathetic Nausicaa embraces all forms of life, even those that might scare other people. See them in Nausicaa of the Valley of the Wind.
A grumpy tourist trap owner, Grunkle Stan has a few deep secrets. See them in Gravity Falls.