As unknown pods crash land on the surface of the desert world, a lone Dune Crawler, a large species of arachnid, inspects the crash site. The unsuspecting bug was ambushed by a Brain, which seized control of it. The brain caused the Dune Crawler to mutate into a bipedal monster with venomous armor piercing fangs and four arms tipped with sharp claws. Dune Crawlers from across the desert are hijacked by the Brains and mutated into multiple Scaroxes, which then join with other species of mutant Brain infected creatures to form an army. The Scaroxes were known to target the Heroes Breez and Rocka.