Why is Sauron acting like Gollum?
It’s actually not Sauron, it’s a one-off villain in a terrible one-and-done filler story. And this is not Armadillo, either:

But the villain does like the band Gwar, I guess.
She-Hulk guest stars.

And Wyatt and Johnny talk about her.

Perhaps Sauron’s been corrupted by his own ring…oh wait wrong one