It's been a long while since I covered Ross' many make believe team-ups between J'Onn J'Onzz and other super-heroes, so you might want to take a gander at The Brave and the Bold: Batman and The Martian Manhunter or "Super-Team Family: Martian Manhunter and Beta Ray Bill". That last one was my favorite of the three, since the two Walt Simonson images laid rather seamlessly together, but I do love how well Art Adams' Ben Grimm mingled into one of my favorite Jim Starlin Alien Atlas covers. In case you missed it, the Sleuth from Outer Space actually did tangle with the Ever-Lovin' Blue-Eyed Thing in DC versus Marvel for all of one panel back in the '90s. I tend to think the Martian Marvel would be the one to ultimately come out on top, regardless of what this "cover" depicts.
...More Lost Team-Up Issues...
- The Thing and Aquaman @ The Aquaman Shrine
- Ambush Bug &... @ DC Bloodlines
- Wonder Woman and Captain America #1 @ Diana Prince
- The Thing and Firestorm @ Firestorm Fan
- Vixen & The Secret Sisterhood @ Justice League Detroit
- The Thing and The Atom @ Power of the Atom
- The Thing and Elongated Man @ Ralph Dibny