The Fireball Nightmare
Nemesis: Martian Manhunter
Other Major Foes: Zook
Appearances: One comic story
Powers: Extremely inflamed.
Released by the idol-head, it set fire to part of a forest, and had to be sent to an alien world to chill out.
Lose: The Giant Watery Hand of Gilgana (1-3)
Nemesis: Green Lantern Alan Scott
Other Major Foes: JSA/JLA
Appearances: 50+ comics.
Powers: Freeze Gun
Bio: Evil scientist, member of the Injustice Society of the World and father of the second Icicle.
Neither of these characters are exactly household names, though Icicle should be known to the DC faithful through the JSA and his more famous son. Regardless of how boring and underutilized the Fireball-Creature may have been sharing its one comic story appearance with a more fanciful monster, this nightmare is in a whole other league of power that Icicle can't tolerate.