X Parasite

x-parasite
the x-parasite is an alien creature found in the Metroid Universe on planet sr388. It is not a true parasite as a parasite does not kill the host unless absolutely necessary. It is an ectoparasitoid. It kills the host and absorbs it’s DNA and intelligence. That ability means an x-parasite that absorbs several different species of animals both strong and intelligent would be able to dominate any sort of predator. Many x can come together and form one creature called a core-x. The change is not chemical however and individual x parasites can be forced from the core-x

predators
The x-parasite has one predator, the metroid. They were genetically engineered by the chozo to destroy the x-parasite. After all metroids were exterminated the x population quickly multiplied.

abilities
in addition to those previously mentioned abilities the x has several unusual abilities. Its ability to absorb intelligence also allows it to organically absorb and implement data, for example to create a heat resistant material to wrap itself in. It reproduces through a process similar to viruses, which makes it almost invincibly adaptable. When an x doesn’t come into contact with a susceptible host it stops growing and reproducing which means it needs no energy for food. It can float forever until disturbed. This makes it amazingly adaptable and incredibly hard to safely breed in laboratory conditions