Spiderworm

Spiderworms debut in Red Rising as engineered silk-producers whose bioSilk webs form the infrastructure of the Institute’s subterranean labyrinths. Across the series they evolve from mere environmental hazards into strategic assets whose silk is harvested for armor, medical sutures, and even covert communication lines. Their presence expands from the Institute’s tunnels to the warrens beneath Luna and the deep mines of Mars, where rebel factions weaponize their webs for ambushes and escape routes. By the later books, selective breeding programs produce faster, venomous variants that shift the balance of urban warfare.