The Gaia Demon is an enemy from Grandia. It can be found in the Savanna Wilderness after Gaia's attack and inside Gaia itself. Gaia Demons may appear alongside Gaia Scorpions, Gaia Slugs and Gaia Cancer and have the ability to cast Quick Quills.
Gaia Demons are quick and are very strong, fortunately they have a strong weakness to Earth based magic. Justin's Dragon Cut will dispatch these with ease but the player may want to save SP for the impending boss battle.