Editing Samus (section)

===Misc===
'''Phazon''': An organic, highly radioactive substance that can be utilized as an extremely high-yield energy source, but is likewise extremely toxic to almost all organic life exposed to it. This semi-sentient substance, when left to its own devices, perpetuates itself by corrupting any nearby matter (organic or no) and converting it into yet more Phazon. Unrefined, Phazon often takes shape as lightning blue and black tendrils or actual physical crystals. Refined or pure Phazon takes the form of a gel-like fluid, and as can be expected, is considerably more potent in both energy yield and in its mutagenic effects on lifeforms. Exposure to Phazon, even briefly, can have severe detrimental effects on the physical and mental well-being of anything that comes into contact with it. In the "best" case scenario, individuals corrupted by this substance gain powerful new abilities and become stronger and more resilient, but they often become psychotic, erratic and extraordinarily hostile towards anything and anyone else. In most cases, creatures or individuals will die horrible, painful deaths caused by unstable, uncontrollable mutations. Select few creatures can ever find a "happy medium", but the few who survive are often still very unhinged and often have dramatically reduced life spans from the prolonged exposure. The substance itself originates from a planet called Phaaze, which was effectively a single massive super-organism. Phaaze "reproduces" by gestating massive Phazon meteors named Leviathans within it's womb (yes, the planet actually has functioning genitalia) then hurling them into space with the hope that they impact a planet. Upon impact, the Leviathan selects and heavily modifies a powerful creature to act as a guardian for the Leviathan itself (the namesake Metroid Prime and Emperor Ing were two such guardians) while it begins to spread Phazon throughout the planet. Had Samus not destroyed all these Leviathans, they would have eventually transformed their host worlds into more Phaaze planets. Dark Samus, once she got her shit together, implanted a sophisticated Galactic Federation AI into Phaaze and used it to forcibly launch Leviathans at specific worlds in an effort to subdue/destroy all other life in the galaxy/universe and turn everything into Phazon. Ultimately, Samus managed to destroy all of Dark Samus' leviathans and, true to her reputation, permanently ended the Phazon threat by blowing up Phaaze (which somehow rendered ''all'' Phazon completely inert, which begs the question of how sustainable Phaaze's reproductive system would actually be - maybe the Phazon only becomes independent when it fully creates another Phaaze?). Was ripped off in the expanse by the proto-molecule.

'''Metroid''': The eponymous creature for which the franchise is named, Metroids are artificial creatures created by the Chozo specifically to combat the X-Parasite they discovered on SR-388. The initial form resembles a floating jellyfish with two sets of fangs instead of tentacles, however many different evolutions and sub-breeds spawned depending on what forms of energy they have consumed or been exposed to, though the "traditional" life stages involve Metroids metamorphizing from floating jellyfish into [[Tyranid|massive insect/dinosaur hybrids]]. On this note, Metroids derive sustenance entirely from energy; primarily by rapidly draining the life force out of any living creature (and any powered armors they also may be wearing) until it turns into a withered husk and crumbles to dust. This, combined with their surprising resilience to most conventional weaponry makes them extremely dangerous and apparently prime candidates for weaponization through both the Space Pirates and Galactic Federation. That said, they do have a notable vulnerability to extreme cold and ''can'' still be killed by sustained, concentrated fire. Eventually, the Galactic Federation officially recognized the danger they possessed to the galaxy/universe at large (while being completely unaware of the X-Parasite that was being kept in check by them), and ordered Samus to commit full-scale genocide on them.

'''X-Parasite''': The "original" life consuming entity on SR-388 (seriously, that place could put many-a death world to shame with the kind of fauna regularly growing there), X-Parasites are roughly basketball sized yellow blobs that infect organic creatures, consume them from the inside while propagating rapidly, then ultimately kill their original host and shape-shift into near perfect copies of them. If their mimic-body is killed, they can even just make a new, identical body a few seconds afterwards if their true forms aren't killed in time. They also assimilate the host's memories in order to properly mimic the creature, and can utilize that knowledge for their own gain. Once they realized the threat Samus possessed to their species they attempted to scuttle the station with her on it. In the form of a BSL scientist they utilized the host's knowledge to destabilize the main reactor's cooling system to cause a meltdown and cause a destructive chain reaction. Later on, upon learning Samus's weakness to cold, they bred a cold sub-breed solely designed to chase down and kamikaze into her to freeze her to death by absorption. But after she acquires a way to mitigate this weakness and went through a room full of the new breed absorbing them all without harm they then flee just like the rest of their brethren. They're immune to almost all known weaponry and are able to infect people or creatures even through vacuum-sealed power armor, which arguably makes them more dangerous than the Metroids created specifically to kill them. This is especially true for creatures with cybernetic or robotic implants/cybernetics/equipment, as not only can they be infected by the X-Parasites, but their technological components can also be fully replicated. This includes but isn't limited to Samus' power suit, missile launchers, beam cannons and even [[what|gravity generators]]. Despite the Galactic Federation's intentions to the contrary, Samus has likely ensured their total extinction when she blew up the lab they were contained in alongside SR-388. Until it was revealed some had made it off-world to ZDR, which also got blown up, so they might be extinct now but since they've now gotten off-world before who's to say they didn't do the same elsewhere?

TLDR: An even worse version of what the monster from the 1982 movie 'The Thing' would have become if it landed on a zoo space station and not an area of barren tundra.