In relation to this old video, it only seemed fair to post on here about how the Dozerfleet Megaverse understands time travel, as opposed to most of Hollywood. Without further adieu:
Sodality: Battle for Metheel, for starters, varies between Back to the Future or Avengers Endgame logic, based entirely on how well Schrodinger's Cat is exploited.
Morzhuk vs. Schrodinger
If Hea Pang does nothing, Morzhuk gets the Grand Ultimates' Ruby. Morzhuk wins. Earth-G7.0 and Earth-G7.2.0 are doomed, along with any other planets existing in those branch-offs of the Divergency. By going back in time to destroy the Grand Ultimates' Ruby before Morzhuk can see it, however, she eliminates any possibility that he will ever possess it! This dooms Morzhuk to have to power up through inferior means, meaning he will still be vulnerable to Extirpon.
The Gray Champion Memory Feedback Loop Dilemma
If Hea goes back to Scarlet Letter times, doesn't have an alias, goes to John and Orenda directly, and then goes to Hester, then her simple act of being direct means that John gets new memories.
This creates a Frequency paradox, where a new divergent timeline is created where John always knew, and to John in the main timeline not knowing at first, but then receiving a feedback loop where he gains the other John's memories after the fact. While the main John doesn't change much, the John in the new timeline suddenly remembers that Hea time traveled, leading to him having a different relationship when Hea meets him in 2012 after his time jump from the 17th century. This means that in the branch timeline, he's reluctant to let Hea go back in time at all, leading to a delay, leading to Morzhuk getting the Grand Ultimates' Ruby, and winning - in that other timeline.
To prevent that, Hea has to prevent the paradox. Except, she can't accept the alias to meet with Orenda and avoid John that John himself suggested, as this would lead to a memory feedback that would result in John having a similar memory paradox. So she has to secretly have Vince give her an alias, so that John won't recognize that the alias Hea uses to meet with Orenda while avoiding being seen by him was a name given to her by anyone in particular.
Literally, Hea has to protect 2021 John from both his 17th century and 2012 selves!
However, she only needs to keep her face and her true identity a secret from John's past self. She can freely share her identity with anyone else, who can be trusted to not expose her true identity to past John.
The Chillingworth Dilemma
So once she and Orenda are on their way to visit with Hester, Hea is free to reveal her true identity to them. She also gets careless, and Roger Chillingworth learns of her identity. Yet, Roger never learns of her connection to John Domeck, so he never confronts John. Therefore, he never exposes her to John. She defeats Roger after a quick battle, and then Roger eliminates himself as a threat of temporal paradox. Since their fight happened in an isolated location, and Hea leaves promptly with no witnesses, Roger just remembers it as a bad trip and embarrassing scuffle of losing to a woman. He attempts to make no mention of Hea defeating him, so it's almost like their battle never happened, as far as history is concerned.
By sparing Chillingworth rather than killing him, Hea ensures that Hester will still accidentally kill him by unwittingly using the Beamer's Ruby. By not telling Hester how it works, she prevents Hester from knowing how to not activate it, preventing Hester from preventing the fatal accident that causes Chillingworth's powers to backfire, thus killing him.
If Hea weren't careful in this way, then Hester would take pains to avoid triggering the ruby inside her necklace pendant. This would result in a Divergency split, creating an alternate timeline in which Morzhuk would win. This is because if Hester doesn't kill Chillingworth by accident with the Beamer's Ruby, then she'll never be inspired to create the Secret Sisterhood of the Locket to hide the necklace from prying eyes. Its significance will be lost. But also, it means that the Ramirez family will never possess it, to give it to Hea.
The Divergency will make one version of Hester so panicked as to lose control, thus causing her to activate the ruby and kill Chillingworth anyway. But in the new branch timeline, Hester doesn't lose control. Without this maneuver, Chillingworth's hand forces Miles Wealthington to come out of retirement as Oraphim, and to take matters into his own hands to defeat Chillingworth. Thus, no Sisterhood within the Order. Without the sisterhood, Hea Pang will never possess her copy of the locket in the new timeline's 2014.
Therefore, that version of Hea would be unable to help her version of John. That Team Gray would lose to the Miles Charleston Chillingworth, who would then make all of Miami suffer. That John, that Hea, would all perish in 2014. Without the Ramirez family being part of the Order, with Anna never possessing the locket, the Ramirez family would never adopt Marge after she gets displaced to 1995. A very different Mapacha del Fuego would exist, and she'd be of no use to Team Gray. And with Team Gray extinct, Navyrope would have to go back in time to stop the Grand Ultimates' Ruby. But would need a means other than Hester's Locket to do it, since no one would know about Hester's Locket.
Making matters worse, Extirwraith would have to be summoned to assist much sooner, since Extirpon wouldn't be able to keep up with all the MPF generators by himself. Extirwraith would be needed to take out Brackett and Hibbins, because there'd be no Gray Champion to do it. This would also lead to Tabitha Pang being adopted out to a very different family, possibly ensuring that the Twirlflame Trio in Swappernetters in this new branch timeline never come to exist!
By adopting Vince's alias, and hiding her face, Hea is able to get John to agree to let Orenda help the "mysterious woman of the Orient." They visit Hester, get the past version of the Beamer's Ruby (because it's dangerous for two versions of Hester's Locket to exist in the same place at the same time, so Hea deliberately leaves her copy behind on Phaeleel in the 21st century), and are on their way to destroy the Grand Ultimate's Ruby. Without fear of John's memories causing a paradox.
If Hea (or Anda or Vince) fail(s) to destroy the Grand Ultimates' in the past, Morzhuk will procure it in the present, and win.
If Hea succeeds at destroying the Grand Ultimates', but is killed in the past, then the Swappernetters timeline is slightly altered, because Tabitha will have lost her mother a lot sooner, resulting in a slight alteration to her personality. It will be less extreme then, because Marge and Candi will still be around. Yet, by the Vindication timeline, Candi is of little use to Tabitha. And Marge fares little better.
By succeeding and being rescued by Pilltar, without Pilltar's identity being revealed, and with Pilltar killing most of the Icy Finger low-levels that were sent after Hea, Hester, and Pearl; Hea ensures that no branch timeline can exist in which Morzhuk ever gets his hands on the Grand Ultimates'.
Since it is destroyed before Morzhuk opens its casing, and only the girls and their monitors in the 21st century in Desulon's lab even know that it has been destroyed, Morzhuk doesn't know better. He opens the casing in the 21st century, and finds that the Grand Ultimates' Ruby has been 404'd out of existence. This leads him to desperation as a backup plan for powering himself up - but it's not enough to make him too powerful for Extirpon.
The rest of the Megaverse vs. Hollywood on time travel attitudes
Other than one other time, in a once-planned Mirror's Edge fanfic where Tabitha goes back in time to save Faith Connors from a Feathertop-planted death trap during the Percolation Warriors Saga, The Gerosha Chronicles otherwise takes pains NOT to have anyone travel BACKWARDS in time. Yes, a lab worker associated with Eqquibus is sent back in time when John Domeck is sent forward, a-la Turtles in Time. But the lab worker is then killed immediately upon arrival, and evidence is destroyed. So the 17th century world never learns this worker's identity. Otherwise, only forward time is ever allowed.
Now, the same Divergency logic applies across the entire Dozerfleet Megaverse. So when visiting pocket realities tied to the Dromedeverse, the girls of Camelorum Correctional in Camelorum Adventures are never visiting their own true past. They may be visiting a present of that pocket dimension that resembles a moment of their own past, or that of their parents. This is how Carly and Jen can wind up in BELF's 80s sitcom dimension, and then get a tour of the late 80s, without destroying any of their own history. In relation to their own world, the original BELF's pocket dimension follows a less extreme version of Narnia time logic.
And when a clone of Volkonir gets trapped inside a Dromedeverse pocket dimension that is built on cyberpunk tropes? That clone's actions in that world have no bearing moving forward on anything in the main Eccentriaverse. The only contamination, is to the pocket dimension. Not only on account of a new Volkonir existing, but also on account of the fact that the new Volkonir has difficulty processing the moment of his entry into the world as his true "birth."
His mind and everything comprehension are contaminated by his inheriting the memories of the original Volkonir. Otherwise, this new Volkonir may as well be a completely different individual from the original. And it shows in how he upgrades his armor to fit his new setting, and in how he has to learn how to exploit the XomiaFaeCore for Weaving, to create a new Tapestry for himself - and for any new Cortasician Knights. The original knight powers of his allies can no longer exist based on power evolution dynamics such as his. So now, he has to re-create the Crystal Swan, Red Serpent, Argon Vole, and Silver Ferret powers from scratch. And then upgrade them per their new setting.
Since this Cyberpunk Volkonir never meets Masato, however, he never learns about the Spectral Hare Samurai knockoff powers. Therefore, in spite eventually learning how to re-create the Knights of Cortascius for a cyberpunk setting, Cyberpunk Volkonir never learns how to create his new world's own version of the Spectral Hare Samurai. His world simply doesn't have one.
In conclusion
Moral of the story: the damaging consequences of time travel aren't just in logical causality of the physical; but also in how one's perception of reality can be radically altered, for better or worse. Only God can cheat Schrodinger's Cat.
