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The Grell are one of the four main factions in ZeroSpace, an insectoid race living in symbiosis with the plant-like Koru. Their motto, "Grow. Expand. Exterminate.", describes how they play: they are relentless terraformers who spread biomass across a planet to prepare the ground for the Koru to take root and thrive.
In the setting they are a tide of highly evolved, plant-like creatures that spawn sites of raw flux crystals across the galaxy, and they were humanity's first contact with alien life. As the powers of the Orion Sector dug deeper into flux to fuel faster-than-light travel, the once passive Grell began to flood across worlds and wipe out anything that threatened their biosphere.

How They Fight
Trait | Effect |
|---|---|
Spread the Bloom | Biomass creeps outward across the battlefield and feeds Grell expansion. Enemies standing on it have their vision reduced. |
Overwhelm | Waves of evolved creatures consume anything that holds its ground. |
Infuse | A strategic infusion turns a chosen creature into a far more dangerous monster in the middle of a fight, trading resources for raw power. |
Koru Symbiosis | The Koru side of the partnership provides healing support, and Grell upgrades such as Rapid Germination speed up how quickly their structures grow. |
Commander
The Grell are led by Vynthra, the Avatar of the Planetmind, who can be selected as the commander for Galactic War missions. See Heroes and Commanders for how commanders work across the game.
Forces
The studio has shown a sample of the Grell roster rather than the full list. Confirmed Grell units include:
Unit | Notes |
|---|---|
Reaver | A rampaging heavy evolution, one of the two creatures the studio highlights alongside the Harbinger |
Harbinger | An acidic evolution that received a dedicated animation pass during development |
Behemoth | A large frontline creature shown in an early unit showcase |
Arkanid | A Grell creature listed among the faction's sample forces |
Lasher | An early attacker whose corrosive secretion adds bonus damage against medium armour |
Gatherer | The Grell harvester unit that feeds the biomass economy |
The Grell start a match with a full patch of biomass already established around their base. Their structures and creatures are tuned continually through balance updates during Early Access.

Playing Against the Grell
Because the Grell economy grows with the biomass mat, denying that spread is the usual counterplay. In Skirmish the Grell are one of the four factions on the ranked ladder, and the standings track a separate per-faction rating as well as a total-damage board for the faction. The Protectorate pages describe the opposite approach, a slower and more defensive style built on holding ground rather than spreading over it.