Elemental mineral monstrosities native to Nexus, gronyx are a threat to miners, geologists, and anyone who settles too close to the mountainous regions of the planet. They do not appear particularly intelligent nor do they use tools or technology, but gronyx are fiercely territorial. They can swing their massive fists like clubs and hurl huge boulders and chunks of ice at any creatiures that intrude upon their domain.
Gronyx are massive - far larger than even the Granok - but are missing many ordinary features common to ordinary humanoids, a feature common among elementals on Nexus. They tend to take on characteristics of the dominant minerals in a given area. If loftite is particularly prominent in a region, for example, the local gronyx will take on a bluish tint; while others resemble metamorphic rock more than crystalline elements.