That's what happens you come from a story written by an edgy man-child with a hate boner for superheroes that wants them to both look bad and be a joke.
Yep, it's why people mock him because it's like "Yeah we get it, American Comics has too much Superheroes and not much other variety, PLEASE stop bitching about it by shitting on Superheroes".
I actually like Wildbow and Worm but like... fucking what?
It's why we mock PTV and how retarded VS. Battlers take it vs. How it happens in-story.
Oh right I forgot to state something about yesterday:
https://vsbattles.fandom.com/wiki/Aiwass Oh wait they actually downgraded them at some point to multiverse level. I'm still not sure where that comes from, but it's definitely better than what they had before its High Complex Multiversal
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Oberon can operate The "Insect of the Abyss" independently from himself and basically is like the equivalent of it's brain. His sleep spells are potent enough to even work on Servants easily and I'm not certain if it worked on Artoria Avalon as I didn't comb through Lostbelt 6 that way.
And the Insect of the Abyss doesn't just have it's Black Hole, it's legit 1,440 KM long(i.e. It's literally the size of a small Country), it's movements and even moving it's wings literally destroyed Lostbelt Britain so it's basically Country level by not just it's basic attacks but also by the sheer pressure it's wings generate. You can damage it but it's temporary and it heals overtime so that won't really work either.
And for it's "Black Hole" capabilities, it's actually a conceptual ability of it being "A Bottomless Pit" and that was why Cernnunos was fucking stuck in there for so long. I mentioned it acts like a Black Hole but as I pointed out before, it's legit worse as once you fall in, if someone doesn't release you from the outside at the right spot, you are SoL as you legit cannot leave by ANY means(Including Teleportation or how Chaldeas does Zero Sails) until you ultimately fall in too deep and get melted into nothing.
Of course, that means you can just defeat Oberon to stop the Insect of the Abyss but good luck with that when the reason he was defeated was because they was already inside of it when they fought despite having the Concept of the Holy Sword user with them.