The WeakestUs aren't the concept of nothing, because the Nomoguses have that title. WeakestUs are BELOW the nothing. WeakestUs can be present in anywere. Visors of crewmates, bodies, pee and poo, etc. It is said they're the first species that has ever existed on the Amonogous Realm or even the Wiki as a whole.
As previously mentioned, the WeakestUs are everywere, but they are so small, so miserably tiny and weak they have never done anything and surely will never do anything in ther existence.
They are SO weak, they dont even serve a purpose. Why they exist? They aren't even prime materials for the life in this world. They truly compose absolutely nothing relevant.
But, do we realize we may be like a WeakestUs to stronger entities? They may be big and strong in their own terms, but other entities like crewmates or humans makes them be the closest thing to the absolute nothing. The same happens if we compare the crewmates to creatures like the Ultragods, being absolute pathetic particles of nothing.
Even if we are nothing in this world, why worry about it? If we are happy with our own existence, thats all that matters. In fact, if we feel dread that in one day a superior entity is going to simply cease our existence with a minimal effort... why not take the remaining time to just be happy? To not cry because its going to be over, but because we had the opportunity to exist?