Because you like Kim Kelly in Freaks and Geeks
Simon Belmont is a vampire hunter bravely carrying on the family business. See them in Castlevania.
Despite this being Robin Buckley's first rodeo with the strange things that go down in Hawkins, she is quick to adapt and proves herself to be a loyal friend. See them in Stranger Things.
Obi-Wan Kenobi is a sage Jedi who doesn't need to say much to teach you a galaxy's worth of wisdom. See them in Star Wars Series.
Holly Golightly spends so much time trying to be other people's dream girl, she doesn't really know what kind of girl she actually is. See them in Breakfast at Tiffany's.
Holden Caulfield is convinced that the whole adult world is full of phonies. See them in The Catcher in the Rye.
Tifa Lockhart is part mother hen, part martial arts bad-ass. See them in Final Fantasy Series.
Marv is a brutish but principled thug who'd be right at home on an ancient battlefield. See them in Sin City.
Wanderer is a Soul, a parasite sent into a host to take over their body, extracting information from them and colonizing their species. See them in The Host.
Cisco Ramon is a proud, enthusiastic member of a superhero support team. See them in DC Extended Universe.
Morticia Addams hates anything bright and cheery and loves all things ghoulish, ghastly, and violent. See them in The Addams Family.
Neil Perry is a brilliant student with an artist's soul. And he's desperate to unleash it. See them in Dead Poets Society.