(Also, I do have some species suggestions.
Aberrations. Look up Aberrations from Wayward Pines. You'll get the idea.
Kikimoras. They're cool.
There could also be something without eyes, because eyeless things are for some reason considered creepy. Trying to think of something...
I think there should at least be some creepy monsters. They don't look good, they aren't all fancy-pretty. Creepy things are fun!)
Aberrations. Look up Aberrations from Wayward Pines. You'll get the idea.
Kikimoras. They're cool.
There could also be something without eyes, because eyeless things are for some reason considered creepy. Trying to think of something...
I think there should at least be some creepy monsters. They don't look good, they aren't all fancy-pretty. Creepy things are fun!)