Darkling

Darklings were a race of fungoid people native to Yuggoth. Around 23,000 BC, the Darklings fought a war with the Tzun and were driven back to 61 Cygni. The Tzun were left weakened by the Darkling genetic weaponry. (PROSE: First Frontier)

Behind the scenes

 * The fungi from Yuggoth are an alien race of the which were introduced in H. P. Lovecraft's . The short story The Monster Factory in the charity anthology Shelf Lifeindicated that the Darklings are specifically the variation of fungus-creature seen . The Taking of Planet 5 referenced another of Lovecraft's fungus creatures, the  of the Himalayas who resemble yeti, with a line that the Museum of Things That Don't Exist has "nine types of Yeti, including the robotic and fungi varieties".
 * The Darklings' name, connection to 61 Cygni, and use of genetic weaponry are references to the Blake's 7 episode Killer, where 61 Cygni is in the "Darkling Zone" and is occupied by an isolated alien civilisation that infects human explorers with a virus designed to kill anyone who's been to deep space. The name "Darkling" also alludes to the light-devoid nature of Yuggoth in Cthulhu mythos stories.