...well, then the answer to the question posed on this comic book cover:
...would be this:
A Bruce Wayne/Ben Grimm crossover story...it has a nice ring to it, doesn't it?
Highlight the following section for the real team-up partners: Brave and the Bold #150 co-starred Superman as the mystery guest. Marvel Two-in-One #91 teamed up the Thing with the Sphinx. I like my answers better, don't you?