I will now lists reasons why Lillie Pikachu and Snowy betraying Ash are imposters!

*DEEP BREATH*

*Pikachu only is strong enough to beat Legendary Pokemon BECAUSE of Ash and only saved Ash after realizing he's willing to risk his dang life!
*Also that's why Pikachu is better than Greninja in Anime, Pikachu has beaten Legendary Pokemon in one on one fights while Greninja almost beat a Charizard that only took down Zygarde after Team Flare tired it out!
*Ash is why Snowy trusts others besides Lillie's family!
*Ash literally has done more to help Lillie and CURED her of PTSD better than any of her friends and FAMILY! And Lillie has helped Ash with him being a depressed boi.

*Deep exhale*

Yeah also I made it so they have transferred Aura Guardian energy due to their first fateful parts of their encounters with each other, and if that's not enough...I made it so MissingNo literally will trap them in the flipping void and make clones of them that actually do the betrayal, and are f***ing forced to watch everything happen with no choice okay?!

Like remember the HATE Lillie thing, that's from the "A New Ash Ketchum" story, originally it was the version where it's AshxLillie, because Lillie was coming downstairs when everyone else nodded, but MissingNo made a clone that made it so she didn't chase after Ash, and then Lillie and Snowy in the new timeline went...well, insane. Same case for when Pikachu does it. And before you say it, I actually got permission from Ray Chiu himself to mention his stories!

Even ones where it's forced betrayal are also unsafe from this factor, because if it's hypnosis or Aura Related, having Aura Guardian energy inside them prevents it from working and you have to have their will allow you to make them obey.
Anyways, here's the stages for the Void HATE thing if you wish to try it:

1. Denial/Newly Trapped: The victim(s) will try to escape or yell for help once they realize they're trapped in the void.
2. Slowly dying hope/Refusing to accept: This is the phase the victim(s) will slowly lose hope of escaping but still have it and hope that someone will save them, colors will also start to fade out a bit.
3. Almost drained of HOPE or Hope/Wishing for a miracle: This is when the victim(s) are starting to get very close to accepting they'll never get out, but they still have that very tiny slimmer of hope left, but another thing is that the color to their body/ies will start to fade even more except for lines of texture and shading (white black and gray).
4. Acceptance/No more hope/HOPE: This is when the victim(s) realize that they're trapped in there and have no hope of being free from watching their world but not interact directly. All colors besides white gray and black to show texture and shading will be gone.
5. Total INSANITY/HATE MODE: This form of this cycle is very rare but extremely dangerous! This time they have simple red lines show their mouth and eyes, but everything else is pitch black to their surroundings, also the only way to cover the face is to use something else or their own body parts to block it, like hair and arms, or closing their eyes can cover the eyes! This form is when they start feeling completely insane and feel rage and hatred to those who they considered close to themself or themselves, or others they hoped would eventually help them escape but never did. They only way to cure this deadly stage is with true love, other than that the only way to free someone with it is power from the heart, or literally killing them to set their tortured soul free, but the latter is pretty sad...

Yeah any Lillie Pikachu or Snowy in an AU they betray Ash in the story suffers this fate, but it's not just limited to them, heck ASH-GRENINJA for all I care could be trapped in the void!

However, there's one thing that gives immunity to this thing, if Ash gets betrayed, but they didn't agree and weren't there and still stay loyal, then they don't get trapped, so Frisktheskelegirl's Ash betrayal story is safe from this rule!

Okay sorry about my angry rant...well I'm tired bye.

Also, I should probably mention this, but the betrayals on Ash and Lillie are actually due to MissingNo's threats on them while under Team Rocket's influence.