Name: Great Fog Puffer
Type: Demon (Command doesn't approve of me using this word, but I don't care, it's the only one that fits)
A large organism about seven to eight feet tall and fifteen to twenty feet long. The torso and head are humanoid, resembling a naked woman of Amazonian proportions, but clearly not human as the fog puffer has red eyes, pinker skin and fleshy tendrils instead of hair. The fog puffer's exposed vulva, while human-like in appearance, is considerably larger in relation to the rest of her body.
The fog puffer's bottom half is the stuff of nightmares, being a long hairless slug-like mass of soft pink flesh. The most disturbing part are her legs, or should that be arms, as she drags her bulk over the ground using a row of human arms and hands that run along her sides like the legs of a centipede.
Some of my colleagues have been quick to dismiss these descriptions as hallucinations induced by the copious clouds of psychotropic 'fog' produced by the great fog puffer. They haven't seen the more horrifying denizens of H-space. I have, and can vouch that "like a jumble of human parts stitched together by a mad Frankenstein" is a more than adequate description of some of the horrors that can be found in this dimension.
I wonder. If we were to go back far enough in scripture, would we find pictures or descriptions of the great fog puffer and other H-space horrors? Did some find their way across the dimensional barrier to our world and become the angels and demons of our early religions? Could they do it again...?
The lower slug-like half of the great fog puffer is filled with large air chambers. The fog puffer draws air into these chambers and seeds it with a complex mix of psychoactive compounds before blowing it out through their vaginal opening as a dense fog. The drugs within the fog have an effect on human libido, raising it to the point where the affected person is overwhelmed and can think of nothing else but gratifying their sexual desires. As a strategy it's disturbingly effective at incapacitating opposition. Each fog puffer is capable of inundating a wide area and it only needed a small group of around five to ten to neutralise one of our forward operating bases.
While the fog puffer's vagina is considerably larger than a human's, they are able to contract the inner walls tight enough to be able to perform sexual intercourse with human males. Although, as with most H-space denizens, the act of sex is used for feeding rather than procreation. Some fog puffers engage in conventional intercourse, others open out their vagina wide enough to ingest their prey whole into their soft lower body. Either way, the result is the same—the fog puffer's prey is subjected to massive sexual overstimulation and depleted of their life and fluids.
There is little for comfort here.
The fog puffer's psychoactive gases are just as effective absorbed through the skin as inhaled, which means gas masks provide little protection. Our medical staff are currently trying to come up with an antidote, but this will likely take some time as the limited samples we've been able to obtain have proven curiously... resistant to analysis.
Even if we were able to negate their airborne psychotropic agents, great fog puffers possess similar regenerative capabilities as other succubus-class H-space denizens. Given their size I estimate it would take considerable sustained firepower to take one out.
On a more positive note, the great fog puffers are large and slow moving. We're not sure how they were able to approach FOB Helmuth unnoticed, but it likely involved the betrayal or elimination of one of our sentry outposts. In future we will need to be more vigilant to ensure the tragedy of Helmuth is not repeated.
Great fog puffers should be thought of not as exotic H-space organisms, but as siege weaponry for a military force that is utterly alien to us.