Perhaps a Fluttershy darkfic where she doesn’t kill or physical harm the victim but he/she slowly gets tired and falls asleep forever because of the Lullaby and/or enthralls them with the Stare. She has to be in character yet creepy, none of that angsty, violent psycho crap. Or how about Pinkie Pie the ice cream mare?
Rarity - Faceting gems.
Applejack - Evil apple.
Twilight Sparkle - Surgical skills.
(Sorry my English).
Forever Faithful.
She want a cutie mark!
And I’ve thought of a fanfiction about Rarity and Twilight using Spike as a sex slave, but that would be more like a clopfic.
Inb4 I create a grimdark fanfic involving me.
Don’t even mention CG. The first story was good, but The Scarlet Harvest Part 2 was so depressing. Especially since Twilight is my favorite character.
I was also thinking of suggesting Sweet Apple Massacre, but that’s way too over the top to be even remotely disturbing.