Alien Parasite

The alien parasite has several stages in it's life, with it beginning in the adolescent stage: The weakest point in it's life as it's a single microscopic animal resembling a sperm cell except for it being an ichor black color and having a soft needle like protrusion in it's tail. Which it will use to inject it's parasitic cells into an uninfected sperm cell to transform it into another one, but that's only if it manages to make it into a persons teste's. But if given nutrients the cell will grow, with the maximum size being the size of a golf ball now being "macrosperm". These small sperm cells are entirely harmless, and unless some purposely ingests them or is just very unlucky. The alien parasite will die out rather quickly, as they can't grow due to being around it's own cells, and they can't move around due to being microscopic in size. If even a single cell of it manages to get into a persons body that isn't their teste's then it will begin it's next stage of life which is the transformation stage. With it working it's way into the host's heart and quickly merging itself inside the organ, working to transform the hosts blood into the cells of the alien parasite. A normally painful procedure if it didn't cause the nerves of the host to be shot, as more of the sperm cells will be deposited inside the host to speed up the transformation. Next in the lifespan are the drones and queens, with the drones usually following the queens and serving them as to speed up their egg production. As the drones will usually start turning the surrounding area into a nest, spreading their black slime over the surfaces until the area is pitch black and the queens are bound to the ceiling. With the queens only purpose is to developed their eggsack enough to lay eggs, then to never stop laying eggs. And the drones are meant to do everything else. The eggs are meant as a final sign that the alien parasite has reached full circle, as inside are large crab like creatures that will either wrap around a captured hosts face, or crotch. Forcing the golf ball sized macrosperm into them and making them into either a drone or queen depending on their gender.

General transformation upon infection: The transformation is very slow and often taking hours to fully convert the host to a drone, with the host's skin hardening into a black slimy skeletal exoskeleton, their bodies growing with hardened veiny muscles as they constantly ooze their parasitic slime, the host will also grow a tail if they don't have one already or it will slender down into a segmented skeletal state with a bladed end. The host's skull will finally elongate into a cylindrical state, with them having featureless faces due to only communicating via chittering and clicking, seeing via echolocation. That's for physical appearances, and as for internal changes it's drastic. As any organ not seen as useful will be eaten away by the parasite, either replaced by muscle, or extra more important organs. Another development is an ovipositor inside it's mouth, with it residing inside their throats and will only come out to force itself into a hosts mouth, or to attach to a transforming hosts ovipositor to speed up the transformation. As the ovipositor is the most intrusive way the alien can force itself onto a victim, and it's also an uncomfortable development to experience for the transforming host.

Depending on the gender of the host variations will occur: So if they are male their cock will spring forward into a permanent erect state. Growing large and girthy while matching the black coloration of the rest of their body, with their testicles growing full and taught as the sperm is quickly overrun and turned into the golf ball sized macrosperm. With the movements often being seen in the overfilled sack, until the large sperm squirm through the now stretchy urethra and to freedom to move around. As for the female they will become much larger than the male, roughly around twice the height and size as their breasts will balloon out and often push out the large sperm variants. With her segmented tail developing a small eggsack that will develop over the years into a large ovipositor to the point where the female is immobile akin to a termite queen. With the female laying many large slimy eggs that will hatch into crab like creatures.

created by Casual_Guy 2026© on janitorai.com