unsettling atmospheric stuff instead of just monsters.
The pictures are pretty much cherry-picked for quality sake and because Civit's idiotic oversensitive filter will most likely run to mommy and putt everything under XXX just for a single harmless tentacle or some shit. It's not trained on anything NSFW, but most creatures or monsters have in general no clothes, so yeah, you need to specify that. Should be no problem, because text-encoder doesn't get trained ( unfortunately to much RAM needed ) and Chroma doesn't use CLIP as far as i know, so only U-Net should be flexible enough.
It can and will produce much more fucked up things if asked to. I don't really know what people would call creepy, uncanny or whatever since i have no limit / barometer when it comes to things like that. Quite a few pictures where from old horror movies and some from new ones, a lot of them pretty niche. Also artsy images, abstract, biopunk and environments.
If you wanna really go for it use horror, movie, slimy, translucent, movie, cinematic etc. In a lot of cases the quality will suffer though because of the base material. Lower strength is maybe better or if you know how to prompt it can be negated for the most part.