Suggested by Destroyer Martian Manhunter is fairly powerful. The guy has gone up against Superman in the past after all and isn’t the kind of guy who will go down easily. That said, Colonel was able to briefly hold his own against Bass and has enough cutting power to easily give a lethal blow to Martian Manhunter. So the hero would have to try and avoid being hit at all which would be difficult since Colonel is a better close range fighter. I just don’t see the Martian hanging in there. Colonel wins.