Please don't list this on a work's page as a trope. Examples can go on the work's YMMV tab.
Nightmare Fuel: Total Drama Letterz
Zita's fear challenge, which involved going into a burning building.
Uzuri's scary doll.
Barney falling and breaking his leg.
Nakia's plan to cripple Spider with a pipe.
Mable getting broken glass stuck in her leg from Kasimar sabotaging the pinball machine.
Kasimar murdering one of Eleanor's ferrets.
Uzuri and Yessica trapped in the burning mess hall.
Tabitha's parents, who have an extreme hatred for people they don't consider perfect...which is practically everyone.
Winnie's 'tortures' in the SAW challenge may seem somewhat funny, but taken out of context they become a lot more horrific and seem like real torture.
The hate note Kim writes for Sasha features among other things, her being brutally slaughtered.
Tabitha's Texts from an anonymous source (in fact, her parents) counting down how many days she has left...
Nakia finally snapping, and planning on killing both the contestants and interns, and to make matters worse she gets her hands on a biomechanical spider..
The way she plans on killing them isn't pretty either. She plans on scalping Quana's hair to use as a wig, capturing the remaining contestants and interns, shaving them bald, poisoning them, and burning them alive.
The spider itself, which according to Nakia is incredibly poisonous.
And to top it off, there's no silly warnings from the author this time, showing how serious things become.
In episode 10 of Letterama, Kasimar was going to do something to Tabitha had Rheneas not showed up at the last minute.
Kasimar in general is this. And to make matters worse his gang is implied to still be out there.