And though this is Old Marvel where time stops in a fight just so those involved can deliver several pages of dialogue, I gotta say: if I was any of the FF, I'd be pounding them when they were only a couple of words into their introductions.
But this was in one of the more forgettable periods of the FF, where any given page of the book looked like this.
And their one weakness was "Artificial means?" So...they didn't do their research and didn't find out that's kind of what Reed does when he's not stretching? He invents sixteen of those before lunch.