The Bestias de Alcantarillas first appear as nameless, subterranean predators lurking in the sewers beneath Tingen City, their presence a constant hazard for low-Sequence Beyonders. Across the series they evolve from mere environmental threats into symbolic extensions of the hidden corruption festering beneath the ordered world of the Beyonder factions. Their role expands from incidental encounters to deliberate tools used by secret organizations, culminating in their integration into larger ritualistic and conspiratorial frameworks that mirror the growing darkness of the overarching plot.

The Bestias de Alcantarillas first appear as nameless, subterranean predators lurking in the sewers beneath Tingen City, their presence a constant hazard for low-Sequence Beyonders. Across the series they evolve from mere environmental threats into symbolic extensions of the hidden corruption festering beneath the ordered world of the Beyonder factions. Their role expands from incidental encounters to deliberate tools used by secret organizations, culminating in their integration into larger ritualistic and conspiratorial frameworks that mirror the growing darkness of the overarching plot.