Because you like The Wicked Witch of the West in The Wizard of Oz

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.

Small and curious, he is a 50-year-old baby of a peculiar green species with unusual abilities. See them in The Mandalorian.

Brian Griffin is the most scholarly member of the family—when he's not drunk on martinis. See them in Family Guy.

Ted Logan wants to party on, but if doesn't get an A+ on his history presentation, he'll flunk out and be sent to a military school in Alaska. See them in Bill & Ted's Excellent Adventure.

K-2SO is a blunt and sarcastic reprogrammed Imperial droid who is always up for an adventure. See them in Rogue One.

A born psychopath, don't expect Michael Myers to understand the difference between right and wrong. See them in Halloween.

Michael Moscovitz is a high school student of few words but a lot of heart. See them in The Princess Diaries.

Cosette is an idealistic woman whose innocence stands in contrast to her harsh childhood. See them in Les Miserables.

Iris West is a barista and blogger determined to expose a secret. See them in DC Extended Universe.

Christian is a romantic who for some reason won't stop singing everything he feels. See them in Moulin Rouge.