Justice League America (1987) #6
Published Oct 1987 by DC.

Captain Marvel battles Martian Manhunter, the Creeper tries to help Dr. Fate take down the Gray Man, and the rest of the Justice League contend with numerous Gray Men in "Massacre In Gray". Part 2 of 3, continued from the previous issue. Story continues next issue.
Plot and breakdowns by Keith Giffen, script by J.M. DeMatteis, pencils by Kevin Maguire, inks by Al Gordon.

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