Appelaxian

The Appelaxians are a fictional alien race in DC Comics. They first appeared in "Justice League of America" #9, which told the (supposed) origin of the League. Seven Apellexians used Earth as a battleground to decide who would rule their planet as Kalar. They were defeated by seven Earth heroes, who went on to form the Justice League.

Each Appelaxian was a different material. When they reappeared in "Justice League of America" #200, they were given names, based on the materials:
*The Wood King
*The Stone God
*The Fire Giant
*The Crystal Creature
*The Mercury Monster
*The Glass Man
*The Golden Roc

A retcon in "" miniseries revealed that these were "host" bodies, and that the Apellexians were all of the same species. The miniseries also featured an invasion of Earth by thousands of Apellexians, eventually repelled by all of Earth's heroes that were operating at the time. Some villains helped also, resulting in multiple Appelaxian deaths.