So someone else posted a thread about the Legacy Virus, kind of indicating that it should be used within the upcoming Aocalypse movie. Personally I disagree, though it did get me thinking about how the Techno-Organic Virus would be an interesting plot point.
So first, lets recap what we know, per canon, about the Techno-Organic Virus for those who may not know, or for whom it's been a while...
The Techno-Organic Virus turns living material into technology. The converted lifeform continues to live and function, but becomes driven by the desire to spread the virus to other life forms. There is no known antidote, although certain powers can hold it in check. The Techno-Organic Virus also has the ability to re-animate dead life.
The exact origin of the virus is unclear, though there are some characters that are fully intertined with the virus, including Apocalypse and Cable.

Apocalypse first became aware of the virus when a young time-travelor (Natham Summers), calling himself the Traveler, went back in time.
Nathan and Apocalypse battled and Ozymandias, Apocalypse's servant, got ahold of some of Nathan's blood.
He took Apocalypse's body to a "Celestial Ship" that Apocalypse had come across, but he was unable to understand or communicate with it. Ozymandius mixed Nathan's blood with the Techno-Organic Virus and used it to heal Apocalypse in a chamber of the ship by infecting him with the virus. This allowed Apocalypse to understand the ship.

Many years later Apocalypse infected Nathan Christopher Charles Summers as an infant, with the virus, forcing his parents
to transport him to the future, where he grew up to be Cable.
Apocalypse also used the virus to turn Warren Worthington III, the X-Man Angel, who had been beaten by the Mauraders during the Mutant Massacre (they had been sent there by Mr. Sinister
who used the future X-Man Gambit to lead the Marauders there) to the point that his wings needed amputation, into his Horseman Death, named Archangel.

I think it's also important to note that the Phalanx share many similarities with those who have contracted the virus. I only note this as it could end up being a story point in any X-Men movie that might include the Techno-Organic Virus.
Also, there have been numerous others who have tried to use the virus against the X-Men or mankind, including Bastion, Stryfe (clone of Cable's) and Selene.
So, the reason I provided all of this background is to show just how integral the T-O Virus is to Apocalypse and how integral the T-O Virus is to so many other stories, including, and especially, Cable.
We know that Cable will be coming to the big screen at some point, so it might make a lot of sense to introduce the T-O Virus sooner than later, whether or not Nathan is brought itno things now or later.
So first, let me say that I can't see them bringing Cable into this movie in any significant way. My reasoning for this is due to how much they will need to focus on characters like Professor X, Magneto, Mystique, Beast, and the kids. So I'm not expecting to see a baby Nathan being infected at this point.
But, the T-O Virus could be used very well in this movie as either a major plot point (that leads to future movies, such as one with Cable) or as a means by which Apocalypse "survives" in the end.
So, at this point, let me stop and simply ask, could you see the T-O Virus being used in this Apocalypse movie, and if so, how? Do you think it could possibly be a major part of the story, or would it just be something that is used as a means to set up future movies? Would we see it in the main story, or would it be a post credits type thing?
As far as other speculation of mine, I'll add that later once this discussion gets going, but let me say that a Cable origin story could easily include two of the beloved OT cast, James Marsden and Famke Jaansen...
So first, lets recap what we know, per canon, about the Techno-Organic Virus for those who may not know, or for whom it's been a while...
The Techno-Organic Virus turns living material into technology. The converted lifeform continues to live and function, but becomes driven by the desire to spread the virus to other life forms. There is no known antidote, although certain powers can hold it in check. The Techno-Organic Virus also has the ability to re-animate dead life.
The exact origin of the virus is unclear, though there are some characters that are fully intertined with the virus, including Apocalypse and Cable.

Apocalypse first became aware of the virus when a young time-travelor (Natham Summers), calling himself the Traveler, went back in time.

Nathan and Apocalypse battled and Ozymandias, Apocalypse's servant, got ahold of some of Nathan's blood.

He took Apocalypse's body to a "Celestial Ship" that Apocalypse had come across, but he was unable to understand or communicate with it. Ozymandius mixed Nathan's blood with the Techno-Organic Virus and used it to heal Apocalypse in a chamber of the ship by infecting him with the virus. This allowed Apocalypse to understand the ship.

Many years later Apocalypse infected Nathan Christopher Charles Summers as an infant, with the virus, forcing his parents

to transport him to the future, where he grew up to be Cable.
Apocalypse also used the virus to turn Warren Worthington III, the X-Man Angel, who had been beaten by the Mauraders during the Mutant Massacre (they had been sent there by Mr. Sinister

who used the future X-Man Gambit to lead the Marauders there) to the point that his wings needed amputation, into his Horseman Death, named Archangel.

I think it's also important to note that the Phalanx share many similarities with those who have contracted the virus. I only note this as it could end up being a story point in any X-Men movie that might include the Techno-Organic Virus.

Also, there have been numerous others who have tried to use the virus against the X-Men or mankind, including Bastion, Stryfe (clone of Cable's) and Selene.
So, the reason I provided all of this background is to show just how integral the T-O Virus is to Apocalypse and how integral the T-O Virus is to so many other stories, including, and especially, Cable.
We know that Cable will be coming to the big screen at some point, so it might make a lot of sense to introduce the T-O Virus sooner than later, whether or not Nathan is brought itno things now or later.
So first, let me say that I can't see them bringing Cable into this movie in any significant way. My reasoning for this is due to how much they will need to focus on characters like Professor X, Magneto, Mystique, Beast, and the kids. So I'm not expecting to see a baby Nathan being infected at this point.
But, the T-O Virus could be used very well in this movie as either a major plot point (that leads to future movies, such as one with Cable) or as a means by which Apocalypse "survives" in the end.
So, at this point, let me stop and simply ask, could you see the T-O Virus being used in this Apocalypse movie, and if so, how? Do you think it could possibly be a major part of the story, or would it just be something that is used as a means to set up future movies? Would we see it in the main story, or would it be a post credits type thing?
As far as other speculation of mine, I'll add that later once this discussion gets going, but let me say that a Cable origin story could easily include two of the beloved OT cast, James Marsden and Famke Jaansen...
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