The Scavenger Gods
These militant crab-like humanoids were created by the Tardigrades to serve as soldiers and bodyguards. They were masters of logistics, unarmed combat, and weather magic, and engaged in a strict eugenics program, allowing only the strongest to breed and selectively pairing those with desirable traits.
Their home was the city of Crystal, hidden in the midst of the Great Illusion at the north of the Salt Flats.
After the fall of the Tardigrades, the Arachnids became listless. Near the end of the 3rd age, they were overwhelmed by the armies of the Salinites. Their cities were razed and the best and the brightest of them were massacred, ending their eugenics program and forcing them to wander the Salt Flats, taking up a nomadic lifestyle.