Eraa entity

An entity originating from the moon Eraa was the cause of the mysterious disappearance of the entire population of Sathos. The entity appeared to be a shimmering orange mist, which could teleport at will. It had the ability to phase life forms out of existence, but only when it needed energy.

History
The entity lived on Eraa, but went to Sathos to feed on the energy of the inhabitants. It became trapped there after having nothing else to feed on. The Zeptonova arrived on Sathos, waking the entity. It was destroyed after Zax fed it with the power from the core of the planet, overloading it.