KrankysFirebrand48 (okay then, this may get a bit descriptive, be advised.)
The people rush to the sewers, entering them through manholes, or to abandoned houses or obscure alleyways, their hands on the forehead as the headache starts to get more infuriating, and some other parts of the body start to hurt as well.
Then, they come to a halt, the pain is unbearable, they can't move anymore, however, whence they were about to release their first screams, they are overflooded with a feeling of contempt, of joy, of sheer orgasmic pleasure that turns their scream of horror almost into a laughter combined with a moan as they drop down to their knees, and their eyes begin to bleed.
They hunch over and spit more blood as the seed of evil implanted into them grows and consumes their body from within, it releases an absurd ammount of hormones that give the sensation of heaven to the subject, while it starts to consume their interiors. They are situated in different places within each of their bodies: One inside the spine, others in their livers, or inside their brain, reproductory organs, throat, lungs, attached to the heart, anywhere that their earlier captors could sneak it into.
After about 5 minutes of unrelenting euphoric pleasure to the subjects, the body collapses, it can't take the toll anymore as the nervous system is already too damaged and they die either from bloodloss, or a death related to the placement of the being, that now begins to take shape from the amorphous blob of cells it once was.
After about 10 minutes the being has already evolved enough. It seems to be some kind of insectoid locust, a "queen" of sorts. It begins laying hundreds of eggs onto the dead body it has just burst out of, so many in fact that it dies in the process.
After about 15 minutes, the eggs hatch and the small locusts consume the body of their mother and of the subject, growing to a size that surpasses their dead mother. They are equipped with large scythe-like forearms that number at 4, and potent mouths capable of chewing through bone, They carry numerous super-bacterias and diseases especially built for the people of the GBE based on their genetic code, on the likes probably never seen before by their medicine. They number in the dozens for each body, hundreds as a collective, and they leave their houses in a swarm, looking for lifeforms to consume and use the bodies to reproduce in an exponnentially increasing manner.
Then, in the system, probably triggered by the small ship, Delta Interdiction starts to arise, it seems that it isn't generated by the ships, but rather the ships ask something somewhere to generate an interdiction field, likely timed. In a manner of seconds it has taken over the whole field, impending doom approches the world of Gnar, both on land and in space.