I was looking through the art of the Silent Hill nurses here and found them charming and see the allure they could have on guys. but my question is what makes this work? Why do other "scary, sexy things" just come off as mostly grotesque or scary? Here are examples that work.

rule34.xxx/index.php?page=post&s=view&id=5954808

rule34.xxx/index.php?page=post&s=view&id=4025344

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Well the nurses at the end of the day are just nurses with funky heads so it's pretty easy to draw em in a way that's not even all that monstrous whereas something like the Huts of star wars are horrible slug monsters so making them sexy would take a lot of redesigning to the point that the creature's essence is lost

I mean, if the name gives anything away then sexy things can also be spooky too! Imagine a werewolf girl milking your cock underneath the pale moonlight~. Or maybe a ghost girl sucking you dry.

rule34.xxx/index.php?page=post&s=view&id=6871529
Spooky and sexy at the same time

Well, this is a classic example that highlights both:

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I haven't looked through the silent hill nurse posts yet, but I do get what you mean. I do have some different examples of how someone can alter or change a character by an exaggerating way of how they look of these posts by the opposite sex, a werewolf girl like Spooky.SLVT mentioned, a busty version of sadako, and muscular version of her(which I think is kinda silly to me). Okay, there is one character I do think that is sexy and creepy that I almost think would bite my junk off.

rule34.xxx/index.php?page=post&s=view&id=5968158
rule34.xxx/index.php?page=post&s=view&id=8420592
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rule34.xxx/index.php?page=post&s=view&id=7010345

Horror porn can be so fucking hot

I love horrific monstergirls such as bubble head nurses, female xenomorphs and such. I like zeblackballd art too