Because you like Mary Margaret Blanchard in Once Upon a Time
Squidward Tentacles is a pretentious clarinet player in search of peace and quiet. See them in SpongeBob SquarePants.
Angela Martin is uptight and puritanical, outside of the affair she's having with a co-worker. See them in The Office.
Newt Scamander is more comfortable with animals than people, even if the animals are super-dangerous magical creatures. See them in Fantastic Beasts and Where To Find Them.
Experiment 626 was designed for one thing: to destroy everything he touches. See them in Lilo & Stich.
Underneath his preening narcissist exterior, Schmidt is, well, still kind of a preening narcissist. But he has a good heart too. See them in New Girl.
Frodo might have carried the ring, but Samwise Gamgee carried the ring bearer. See them in The Lord of the Rings.
Dustin Henderson doesn't let the bullies get to him. He's secure in who he is and that his friends have his back. See them in Stranger Things.
A karate master/rocket scientist/squirrel, Sandy Cheeks is the only one who can clean up the other resident's messes in Bikini Bottom. See them in SpongeBob SquarePants.
Thanos is an intergalactic warlord, on the hunt for infinite power. See them in Marvel Cinematic Universe.
A brave but pessimistic nobleman, Boromir knows one does not simply walk into Mordor. See them in The Lord of the Rings.
