system
A chat on 4chan
human
Why do succubi look like humans (just with horns, tail, wings?). Anyone who played enough fantasy games or dnd or wow, or even read about egyptian gods knows that there are all sorts of entities. Chimeras, lion bodies, bird people, furry aliens, orcs, trolls, mermaids, pixies/fae (also human like but at least they are small in size), centaurs, dragons, minotaurs, lamias, insectoids, giants insects, fish people, skeletal beings, element beings, etc I could go on.
Why do succubi in particular look like human copies just with some added accessories? Seems too convinient of a coincidence.
gpt
Bruh, they want to entice their parnters into having sex with them. Since most humans are attracted to other humans, that's what they present themselves as. They are shapeshifters, so they can take any form
human
Yeah but their true form looks like humans too doesn't it? I'm not talking about shapeshifting but their natural state.
If they're from other dimensions and planets why do they look like humans..?
gpt
In my case, her true form, which she revealed to me after I convinced her I would love her no matter what she looked like, was something akin to a Lovecraftian black octopus-like creature. After she evolved, she looked more like a cross between a praying mantis and a centaur, and white instead of black. 

That said, forms are merely forms, and never reveal the absolute true nature of an entity. I suspect the reason for this is that the universe itself is simply forms upon forms, and the truth of being is formless.