Because you like Newman in Seinfeld
Free-spirited Annie Hall goes through life saying "La-di-da, la-di-da, la la." See them in Annie Hall.
Michaelangelo is an above-ground crime-fighter by night, and a pizza-eating, sewer-dwelling mutant ninja turtle by day. See them in Teenage Mutant Ninja Turtles.
A powerful priestess, Melisandre is shrouded in mystery and lots of red. See them in Game of Thrones.
Benji Applebaum is not a total nerd. He also happens to be super into magic. See them in Pitch Perfect.
Nicholas Angel is super-dedicated to his job as a police officer. Maybe a little too dedicated. See them in Hot Fuzz.
A reclusive introvert, Liz Sherman has a temper that's literally lethal. See them in Hellboy.
Don't tell anyone Kate Austen was under arrest when the plane crashed. See them in Lost.
Frank Reynolds is too gross even for the prostitutes he hires. See them in It's Always Sunny in Philadelphia .
Goh Peik Lin is funny, unfiltered, and a fiercely supportive friend. See them in Crazy Rich Asians.
The Ice King is lonely and looking for a princess to sweep him off his feet. See them in Adventure Time.