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.
Evil Is Sexy: One of the antagonist vampires in The Last Vampire series has a face full of acne scars.
Magnificent Bitch: Last Act. Susan. She wrote a play under an anagram of her name, artificially aged it, hid it in a secondhand bookstore, bought it, and then proposed it to be the next school play. She then successfully tricked Melanie into becoming friends with her so she could get her involved in the play, gave her the role of the main character, and had her kill Rindy opening night, all the while Rindy realized what was going on and genuinely pleaded for her life to Susan while everyone thought she was just acting.
Moral Event Horizon: Chain Letter 2 is all about invoking this trope. Each of the protagonists is given a task to complete which will push them over the horizon. If the task is not completed, the character in question will be killed, effectively giving each of them the choice between death and damnation. The tasks given ranged from the truly horrific ( Kip's was to set his younger sister on fire and ensure her entire right arm was burned) to the Felony Misdemeanor? ( Brenda cutting off her own finger and delivering it to one of the other characters was definitely a moment of Squick, but it's hard to see it as something worthy of eternal damnation).
It wasn't so much about "eternal damnation" in the usual sense as it was about what would be personally damning to each person who had to complete the task. Kip's task was to set his younger sister on fire and ensure her entire right arm was burned, but this would be personally damning because Kip loves his younger sister like fury, so Kip rather angrily refuses to harm the person he loves most. So the killer sets Kip on fire instead, but Kip's death is evidently preferable to what the killer was asking him to do. Meanwhile, Brenda is a person who loves her own body and her own physical beauty and attractiveness more than anything else. So cutting off a finger would be personally damning to her, but unlike Kip, Brenda is afraid of death more than she's afraid of disfiguring the thing she loves most, so Brenda gets drunk enough to cut off her finger without too much pain.
In both The Midnight Club and Sati, Pike has written two homosexual males who die of AIDS.
Flynn's actions in Weekend. He hides his identity partly so he can decide whether or not Robin deserves a kidney. If you analyse this at all it's pretty horrible to insinuate yourself into a relative's life so you can pass judgement on whether or not they deserve to die young.