Slaygar

 is a minor antagonist in the series.

Bio
A toxic waste monster who first appeared in "Perceptions." He was sent to wipe out the human race by poisoning the planet with the toxic fumes he breathed. His pollution damaged the power portals and only Apollo was able to transform and fight. Apollo learned from Nimbar that Slaygar's weak spot was behind his ear. Apollo eventually discovered Slaygar's ear was actually in his stomach and began to win, but Emperor Gorganus recalled Slaygar before he could be destroyed.

Appearance
Slaygar is mostly a dark green shade with limbs and a large mouth. He is made of sludge, giving him this appearance.