Hedoron, being an amoeba, only looks like a blob of purple and blue sludge.
Hedoron was created by Herodenia III and released during a battle with Rainbowman when he realized he was failing. Hedoron was manipulated to attack Rainbowman and proved to be quite troublesome especially when its absorption was increased. However, Rainbowman was able to evade Hedoron and finish off Herodenia III, who's defeat also brought upon the death of Hedoron.
Hedoron can give off a gas which petrifies most enemies.
- Main article: Hedoron/Gallery.
- Hedoron is also the name of a sludge monster from episode 1 of the series, Spectreman.