Fungi from Beyond. Mi-go are unnaturally graceful creatures has a bulbous, lumpy head, spiny insectoid wings, and a tangle of spiky, clawed legs. Although a mi-go's shape might suggest it is an arthropod, the creature is, in fact, a highly evolved form of extraterrestrial fungus. Mi-go communicates via a combination of clicking pincers and subtle shifts in the coloration of their bulbous heads. A typical mi-go is roughly the size of a human but weighs only 90 pounds.