Because you like Dick Solomon in 3rd Rock from the Sun
Riggan Thomson is a washed-up movie star running from his inner demons. Alas those inner demons look just like the superhero he used to play. See them in Birdman.
Phoebe Caulfield is a wise-beyond-her-years 10-year-old with an empathetic spirit. See them in The Catcher in the Rye.
Claire Standish is a popular, perfect princess who's deeper than she seems. See them in The Breakfast Club.
Peter Pevensie shows as much courage as a child king as he did under The Blitz of London. See them in The Chronicles of Narnia.
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.
His nickname of 'Zero' says a lot about what other people think of him, but he's finally standing up for himself. See them in Holes.
Marinette Dupain-Cheng is a shy teenage girl, fashion designer, and superhero. See them in Miraculous: Tales of Ladybug & Cat Noir.
Celie Johnson says she's poor, black, and may even be ugly. But dear God she's here. See them in The Color Purple.
Cynical, judgmental, and hipper-than-thou, Enid Coleslaw wears her outsider status like a badge of honor. See them in Ghost World.
Foggy Nelson is a principled small-time lawyer fighting for fellow little guys. See them in Marvel Cinematic Universe.
A life spent as "Number Two" is bound to give Diego Hargreeves an inferiority complex. See them in The Umbrella Academy.