Habitat: Desert. Arid Mountains.
A dusky-skinned woman with snakes for her hair, snakes for her arms and the lower body of a giant snake. Rather than a tail, her lower snake half—like her arms—terminates in another snake head. None of these heads are false. As in, they all possess working oesophagi that link to the same alimentary system.
(I have no idea how this all connects up inside them and I'm not sure I want to know.)
These charming ladies also possess fully functional poison fangs hidden within their breasts, although the poison is supposed to have some pleasurable side effects such as increasing libido and inducing euphoria.
They are capable of altering perception so that they are seen as sultry dancing girls. These dances have a mesmeric effect on their audience and allow the Ophimanibus to get close enough to bite her intended target. Once bitten a man will become helpless and unable to resist while the Ophimanibus performs sex acts on him.
As with other hindigs, the Ophimanibi feed on semen, or rather some abstract spark of energy or life that is released during ejaculation. While they consume the bodies afterwards, either with the lower tail mouth or sometimes even through their vagina, it is the draining of semen/energy that is fatal. Their victims are usually dead by the time they are swallowed.
(Semen == Energy == Soul?)
Their hypnotic abilities appear to be sound based—possibly generated by the head snakes and occurring at a frequency outside the range of human hearing. This is aided by a strange natural phenomenon at the edges of the Mandeville desert where they are found. Wind through rock formations on the edge of the desert produces an odd acoustic effect that dulls reaction times and seems to make men more suggestible to the mesmeric abilities of the Ophimanibi. Ear plugs should go some way to reducing the effectiveness of these attacks.
Conventional firearms are effective, assuming they're working. If they're not, engaging Ophimanibi in close quarters is not advised. They are fast, agile and the snake arms give them a lot of reach. Their venom acts quickly once it enters the bloodstream and a single bite is enough to incapacitate a man.
Even if their mesmeric abilities are resisted, Ophimanibi are extremely dangerous at close quarters because of their speed and multiple angles of attack.