^^ Imo, Beyonder creating a reality so much bigger than the infinite multiverse is the just as good.
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In Marvel comics, concerning "classic IG"
... only the "representative power" of TOAA can possibly defeat the IG.
I say "possibly" ... cause like Galan pointed out, the LT had to "determine" if he had the power,
and the LT was packing the power of TOAA in that particular story.
So basically, outside of an absolute supreme being, classic IG will always win.
In fact, the IG, is the only thing that I have ever seen affect the Beyond Realm. 👆
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The LT embodied the Multiverse in Hickman's world,
so I don't know what that means for the LT that fashioned the power of two Megaverses,
the LT who exists in all MultiverseS simultaneously.
Does Hickman not acknowledge other realities except for the Beyond Realm, and therefore the LT was all of Marvel?
So, I'm not too sure what the BeyonderS killed.
But, considering that a minute bit of their energy is what gave rise to Beyonder/Owen and CCUs,
I can safely say that the BeyonderS, even one, would be all-powerful within the Multiverse.
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I'm still catching up on Doom.