|Aliases|| Star King Dragon Veldanava (previous incarnation)|
Earth Dragon Velgaia
|Species||5th True Dragon|
|Web Novel Debut||Chapter 137|
When her pet dragon was killed Milim was sent into a rage and ascended to a True Demon Lord and had to be subdued by Guy Crimson and Ramiris. When Milim evolved the Gaia's body transformed into a Chaos Dragon. However since it did not have a soul, the dragon transcended both good and evil becoming a force of pure destruction.
Milim in her sadness sealed Gaia's body away so that nobody could find it. However the dragon's energy slowly seeped from its body and ruined the surrounding nature. When the Freedom Association was asked to investigate the miasma, Yuuki found the Chaos Dragon.
During Leon and Yuuki's battle, Yuuki summons the Chaos Dragon. Leon quickly seals it, but not before Yuuki has stolen its core and becomes a Dragon Warrior. Yuuki is still beaten in battle, but is able to escape.
An egg is formed from which Gaia is hatched and Milim is over joyed. Milim and Rimuru proceed to level up Gaia in the Labyrinth.
Gaia later combine with a dragon core and evolve to a True Dragon. As Gaia become Veldora younger brother, Rimuru named it "Earth Dragon Velgaia"
Gaia can absorbed the surrounding magic power to build up its own power.
- Chaotic Breath: a miasmic breath that corrodes.