He has Resistance to
Corruption, which involves physical corruption which in turn is often done through Biological Manipulation and Disease Manipulation. While it is neat that Alex can control the virus on the molecular level, this does not mean that his infectious mutation works on the molecular instead of genetic/cellular level. To quote a character from Prototype talking about the virus:
Once insinuated into the system, it affects the protein encoding regions of the promoter introns within each cell.
In short, it enters, repurposes and changes the cell. The new cell replicates with formerly dormant non-encoding regions active, causing drastic biological changes.
More often than not, these changes are too drastic. In 99.9% of the cases, the biology of the organism fails during this repurposing, causing massive organ failure and death.
From first infection to death varies per target, but is usually measured in days or hours. |
Having Resistance to Corruption does not necessarily mean it can resist molecular-level Biological Manipulation, especially when the biological changes you've cited have only shown cellular/genetic level in the scans.
The quote you've listed about the Blacklight Virus only takes into consideration about how the Blacklight Virus
initially infects its targets. However, it isn't necessarily the same throughout the games, as the Blacklight Virus
rapidly evolves and improves in its capabilities to the point that it became different each time in the Prototype lore. This is evident when the infection being "usually measured in days or hours" was outdated due to the Blacklight Virus being shown to rapidly infect targets
within mere seconds by Prototype 2 as one of the various examples. What you've cited has become outdated by the new feats the Blacklight Virus has performed.
And yes, Mercer's Blacklight Virus
does infect at the molecular level. It's literally what happened to Whitelight (a liquid inorganic chemical that was created to cure the Blacklight Virus) when Mercer's blood tainted and infected it, which gave Mercer
control over all traces of Whitelight Virus in existence at the molecular level - which demonstrates that the Blacklight Virus can infect all traces of the targets at the molecular level (which was what happened to Whitelight) and allow Mercer to gain control over all of the targets' molecules once the Blacklight Virus has infected them; this is also even emphasised further that, despite the infected Whitelight being sublimated into gasses, the gaseous states of Whitelight still infected its targets (which demonstrates that the Blacklight Virus infection is still retained at the molecular level within Whitelight). Even Elizabeth Greene's Redlight Virus, which the Blacklight Virus was created to surpass, was capable of infecting inanimate objects such as entire buildings to the point that she
can make the walls of the building such as concrete crumble down or
strengthen the integrity of her infected buildings to the point that it takes sustained heavy military attacks and a thermobaric weapon such as the Thermobaric Tank to pierce through, and Mercer has absorbed her and thus should scale to her abilities by default even without taking into consideration that Blacklight Virus is canonically an off-shoot of the Redlight Virus in the Prototype lore (which allows the Blacklight Virus to scale to the Redlight Virus' infection even before Mercer has absorbed Greene, due to the Blacklight Virus being created from the samples of the Redlight Virus but made to be deadlier and overall more superior) - and this was before Mercer has shown his molecular-level infection and manipulation feats later on.
Demonic influence have been terraforming planet Earth to be inhospitable to terristrial life through the production of bio-contagions and toxins, and the Doom Slayer has no issue passing near through the territory of the nests that spreads these biolgoical diseases:
The Hellgrowth formations on Earth have undergone great scrutiny by experts at the Allied Nations. These cancer-like growths exhibit alarming cellular reproduction rates, outpacing any biological lifeform previously known.
Their structural pattern is chaotic, almost random, with only one identifiable constant - the emergence of totem-like nests, which at full maturity, resonate with powerful electromagnetic frequencies capable of producing a form of inverse quantum field. These fields, once activated, result in the fabrication of Hell portals; tears in space-time which serve as gateways between dimensions.
The growth exhibits certain pre-determined qualities. In the consumption of our ecosystem, it creates environmental conditions more conducive for its own continued formation; in effect, employing an organic method of terraformation. The resulting environment is hostile to terrestrial life, producing atmospheric toxins and a multitude of environmental hazards.
Although it is understood that the growth accelerates the arrival of demon life on Earth, it is not clear how the growths themselves originated, or whether there was some sort of catalyst that created the conditions necessary for their existence. It is believed that if the source of the growth can be identified, there may be a means of uprooting the entire formation. |
| The subject of great scrutiny for ARC scientists on Earth, these Hellgrowth formations have appeared all over the planet, taking hold wherever Hell has made its presence known. Forming chaotic, seemingly random structural patterns, the propagation of hellgrowth has taken root at an alarming rate, exhibiting a cellular reproduction cycle that ARC scientists fear may become impossible to contain. The resultant environmental effect is extremely hostile to terrestrial life, producing atmospheric bio-contagions and a multitude of organic hazards. Wherever these nest-like formations emerge, they are protected by swathes of defensive tendrils - long thorned tentacles that demonstrate a keen awareness of their surroundings, fully capable of disemboweling anything that it deems a potential threat to the nest. |
None of these states anything about the adversaries' attacks being affected by the demonic influence (I doubt there are any instances of a demon's presence transmuting an opponent's attack mid-battle). In fact, there aren't even any timeframes shown or stated about the speed that the demonic influence has taken and how combat applicable it is, and all of the terraforming and environment alteration were all done off-screen from what I can recall, so that doesn't really help prove that the demonic presence is really that combat applicable. The bio-contagions does not suggest anything that's molecular-level infection from the Hellgrowths, and from what I can see, the demonic presence causing the manifestation of Hellgrowths does not showcase anything about living targets being affected and altered biologically at the molecular level. And based on what I can see, causing Hellgrowths to form is more of an environmental ability than an actual combat applicable ability.
Environment Destruction and similar abilities do exist, where they are assumed to only affect the environment and not actually be applicable to combat such as affecting an enemy combatant or their attacks, and I don't see why such a case is different for the demonic presence. For Doom Slayer resisting such bio-contagions, unless Doom Slayer has shown that he can resist molecular-level diseases, his resistance will be overpowered by Mercer's Blacklight Virus.
He also travels through the Blood Swamp which is described as a bog of disease. In gameplay trap pods creates poisonous gas and water does damage over time:
The Blood Swamps stretch across miles of Hell, a festering bog of disease and acidic rain. Towering above the mire, Ingmore's Sanctum rises into the clouds, a solitary vision of Hell's ancient past. Here the Father decreed his wisdom and oversaw his works, and it is here that his life sphere is interred. The Sanctum serves as a mausoleum of Gods, the sanctity of the spheres protected by the ancient ritual known as the Trial of Maligog.
During the Unholy Crusade, Night Sentinels would journey alone into the swamps attempting to overcome the Trial and reach the rumored resting place of the great Creator. None succeeded. Legends among the Argenta state that their spirits remain near the grounds of the Trial, bound to it eternally, waiting to witness the one who will be granted passage. |
Again, unless these diseases have shown molecular-level infection, Doom Slayer's resistance will be overpowered by Mercer's Blacklight Virus simply due to the fact that the Blacklight Virus' infection is beyond the best diseases Doom Slayer has endured.
It is questionable whether Mercer can absorb the Praetor Suit and Argent Energy. Also he needs to get close first, in other words fight.
Doom Slayer can shoot him with BFG 9000 and be done with it.
If it still has molecules, then Mercer can still absorb the Prator Suit and the Doom Slayer - and Mercer does not need to absorb Argent Energy when absorbing Doom Slayer and the matter of the Prator Suit is enough for Mercer to stomp in this matchup. As for getting close, that's not going to be a problem when he has tendrils to extend his reach, and he has used tendrils to absorb multiple targets beyond a normal human's arm distance before, such as when he absorbed several of the Evolved.
As for Doom Slayer shooting him with the BFG 9000, Mercer can just regenerate and then get to absorbing the Doom Slayer. Doom Slayer needs more than just the AP of his guns to get past Mercer's regeneration, and that's not even taking into consideration about the fact that even the most powerful of Doom Slayer's own guns (which is 8-A or Multi-City Block level) can be tanked by Mercer based on the current profiles, so Doom Slayer's guns will be ineffective and all he has will be his fists by this point (which may as well be suicide for him by fighting Mercer at close range, as it will lead to him getting infected beyond what he has shown to endure or being absorbed).