As he’s taken, I’m going with Sheldon Cooper. Not simply because anything non-factual will simply go over his head, and he won’t be fazed, but because eventually he will be so annoying that even a Skald-like being will simply explode within a matter hours of having to deal with him.
p.s. I am presuming that this is a board-invasion, and not a physical one. So I wanted someone good with words, or too stubborn and arrogant to get taken down by even the most irritating and manipulative of board-trolls.
I would comment that you are thinking about putting the movies on a woman with a super-strong, nigh-invulnerable husband, only it occurs to me that Elasti-Girl could also break every bone in your face if she felt like it.