Definately get to 8, with prep exploit from Ock's side they can clear.
Sandman on forum fights in standard environment is pretty nasty to get rid off.
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Regular Namor is badass enough, being billion times more powerful than AquaCurry.
Now he has some of Hydroman's powers, physicals boosted and then there is the Serpent Crown, which might've altered him further, but that's speculation.
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sandman is one of those characters who tend to suffer from a lot of pis. he has weakness to water--sometimes, to varying degrees. sometimes things phased straight through him, sometimes not. different things like being blown up have dispersed him, other times they haven't. he can be impaled sometimes, but other times laughs it off.
he's a character who is much more powerful in a forum setting than in a comic. that said, aquaman could beat him, like namor could. but he's a difficult opponent in a forum against someone who is mostly one dimensional. if namor and am have hydrokinesis available, they'd win, depending on the setting. tp would also be an auto win i think. lightning could turn him--or parts of him to glass. so there are definitely situations where am would beat him. if this is brick-style am, and it's brick style namor, it would be a lot mroe difficult.
None of these characters have any sort of resistance to Mysterio's illusions, so it really comes down to durability, and how many hits they can sustain before they get in a lucky hit against each of the 6. I'd say definitely the Skrull can go nova and do an AoE obliteration effect to wipe out the 6, so they definitely stop at 8. The only question is if Namor durable enough to solo them all, and I'd lean more towards yes.
I'd say 8 without prep but with prep it's too hard to tell. Bubble in the brain is pretty hard to overcome, not to mention omnidirectional flame/shield.
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