Parasite
It is a sentient jellyfish of unknown origin. What sets it apart from ordinary jellyfish is not so much the fact of its consciousness, but rather the round spots on its "bell" that serve as its eyes. It is incapable of moving on its own across land, so it pretends to be harmless at the moment when a Slugcat decides to eat it β and that is precisely when the body-snatching process occurs, leaving the original owner no longer able to control the body.
There is a chance for the Slugcat to rid itself of the parasite through induced vomiting, as long as the parasite has not settled deep inside.
After the body is taken over, its appearance changes over time β it grows increasingly pale and sluggish, as if on the verge of falling apart, and its movements become slower. While inhabiting the Slugcat's body, the parasite will try to mimic Slugcats in order to hide the fact of its parasitism. Once the cat's body finally falls apart, it seeks a new host. To do this, it can either return to the water or attempt to attack another Slugcat.
But even mimicking Slugcat behavior does not always help, and most Slugcats avoid it.
During its journey, it encountered the iterator TL while venturing into new territories. It agreed to help the iterator in exchange for shelter, and the iterator also assigned a observer to it β to warn of dangers nearby and to read information from the surface of structures.
Though it is a parasite that takes over bodies, by nature it is curious and prefers moving across land rather than in water.
