The monstrous fa'gu'leyth is an extradimensional parasite from an unknown source. Initial tests indicate the fa'gu'leyth is capable of infecting native plantlife (especially moss) with a hivemind-like syndrome. It has been determined that the fa'gu'leyth consciousness can perceive its surroundings from the point of view of any infected plant, and seems to also be capable of reproducing via spores emitted from the bright green moss that grows on its body. A mutated vascular system allows the fa'gu'leyth to perform an indirect form of photosynthesis via the algae that grows rampant in its cardiovascular systems.