Fyrnocks are ferocious quadruped creatures featuring yellow eyes, sharp teeth, and long tails, that reproduce in great numbers. The animals are unable, whether for fear or sensitivity, to walk in sunlight. In the cover of darkness, however, fyrnocks are fierce, relentless predators, attacking in throngs. Hera and Sabine of the Ghost crew encountered a colony of fyrnocks on the Fort Anaxes asteroid, barely escaping with their lives.