Because you like Rosemary Woodhouse in Rosemary's Baby
GLaDOS will supply the food when you get together: a delicious cake. Of course, it could just be a trap so she can kill you. It’s hard to say. See them in Portal Series.
A crabby troll, Karkat Vantas is perpetually angry about his lot in life. See them in Homestuck.
When his friend goes missing, Lucas Sinclair is ready to fight. All of the Dungeons and Dragons is really paying off. See them in Stranger Things.
A precocious 11-year-old, Satsuki Kusakabe is not quite as grown up as she pretends to be. See them in My Neighbor Totoro.
Shuri is a genius-level inventor with a wicked sense of humor. See them in Marvel Cinematic Universe.
Don't underestimate Maggie Greene. She's a farm girl with a mission. See them in The Walking Dead.
In the simplest terms, in the most convenient definitions, people consider Brian a nerd. But he's more than that. See them in The Breakfast Club.
Rose Tyler may have not done too well in school, but she's certainly holding her own in space. See them in Doctor Who.
Insightful about everyone else's neuroses, Rose Lalonde is not as aware of her own. See them in Homestuck.
Irene Adler has to use both her brains and her body to survive. Luckily, she's usually the most brilliant person in the room. See them in Sherlock.
Once a handsome prince, the Beast is now a grumpy, furry, monster. It's hard to pinpoint which mammal he resembles the most. See them in Beauty and the Beast.