No, it can't. Endbringers have an entire galaxy worth of mass to call on from canon. Meaning any limit to the grey goo is certain to be too low to actually do more than make them itch. You'll never kill an endbringer by attacking its mass, you have to destroy the core.
[X] Attack Sparky. He has already shown he doesn't care about collateral damage.
- [X] Put him in a ring bind and teleport him to Dragon or Tim for holding and interrogation on his nanites
- [X] Take him to the headquarters after the battle and tell them about how and why he broke the truce.
We can have Dragon and Tim take a look at his tech after the battle. Hell,even Armsmaster used similiar nanites in canon Worm. More importantly
As Armsmaster's nanotech in canon shows, nanotech can't affect his deeper materials, where space itself has warped. However, releasing an upgraded version of the tech in Phantasm's "safe space" might cause substantial damage, or it might be able to both stick to Leviathan and effectively limit his ability to regenerate his less dense layers, reducing how much of our firepower gets wasted taking out ablative armor. As is, that weapon's useless, but if Dragon asks for the cannon to study, we can get Tim to upgrade the tech.
Even if we can't come up with a way to use these nanites against an EB, there might be incredible advances in nanotech manufacturing to help build the weapons we want to bring to the next EB fight.
if Alexandria actually inhaled some of the nanites at this point can they replicate inside her and close off her airways in the one minute time limit?
Realistically, with her costume gone, there shouldn't be enough material on or in her for the goo to replicate, though it could certainly block her airways with a relatively small amount. From the description in the update, I don't think she inhaled enough for it to be a concern, but this is Worm, so "realistically" doesn't always apply.
Well, I expect If we manage to talk him down, it'll give us enough goodwill with him to influence his future.
So when we discuss it after the battle, we'll be capable to talk him into joining us or the Protectorate/Guild/Wards, acquiring an ally or at least a friendly acquaintance.
If we just attack him, he'll probably refuse to listen because "Fuck you, bitch, I could have killed him, I could have, it's all your fault I'm in the shit now!"
I do not see this character as being intended to ever be used again. He is quite literally a joke. That's why we're calling him Sparky. Even if that were not the case, his given views on "acceptable losses" would make convincing Taylor to even try to recruit him be a major uphill battle. Heck, convincing the players to vote for her to try is a pretty much insurmountable obstacle at this point.
Well we can't just choose "attack Sparky" with no defined method, knowing the OP, he'll prolly have Taylor burn him to death. Her spells be on lethal right now. Fools, d'you want Taylor to have a guilty conscious during an endbringer attack? Furthermore, her burning him to death is almost certainly in violation of the endbringer treaty yo! Attacking with intent to kill and actually killing said person participating in an endbringer attack. Can definitely be brought back against Taylor! If yeh really want taylor to attack, then at least put:
Ring Bind. Holds him in place without causing any harm to him whatsoever. Teleporting him away from the fight keeps any well meaning capes who run across him before the fight is over from letting him out of the binds.