These are what we call the 'YMMV items.' Things that some people find in this work. We call them 'your mileage might vary' because not everyone sees these things in the same way. This starts discussions in the trope lists, a thing we don't want. Please use the discussion page if you'd like to discuss any of these items.
Moral Event Horizon: The Curator when he forces Vlad to fight Danny until one of them can't continue anymore. Especially after he personally tortures Danny afterwards in the infirmary.
What Measure Is a Non Badass: Melody and Ryder are ridiculously capable by human standards, but can't really keep up with ghosts and half-ghosts.
YMMV for The Collector(2009) and The Collection(2012):
Complete Monster: The title character is a Serial Killer and Torture Technician who breaks into innocent families' homes, turning the homes into death traps and torturing the family members before "collecting" one he likes best. His inventive traps kill multiple people in horrible ways, and at the end of the film, he kidnaps the main character of the film. In the sequel, the Collector is revealed to turn his captives into drugged up cannon fodder, and kills a group of intruders by having them crushed to death in an elevator. All the Collector can do when he sees the atrocities he unleashes is to give a small, satisfied smile.
Even Evil Has Favorite Victims: The Collector seems pretty angry in the sequel when the girl he'd brainwashed and tortured into being loyal is killed in a trap.