The loirbnigg represented a non-sentient reptilian species that originated on Frisal. This planet served as a private reserve for affluent Imperial clans. On Frisal, these eight-legged beasts were cultivated and tamed to be mounts. They were ridden by young members of Atrisian noble lineages, including Villis Andal, who eventually rose to the position of Imperial Moff governing the Elrood sector.
The loirbnigg's conceptualization is attributed to John Terra for Planets of the Galaxy, Volume Three, a publication by West End Games released in 1993.