Kagu name "Rhynochetos", and the clade name Rhynochetidae, are derived from the Greek "rhis" meaning nose and "chetos" meaning corn, referring to the corn-shaped flaps over the nostrils. The specific name "jubatus" is derived from the Latin "iabatus" meaning crested. The name kagu is derived from the Melanesian names for the species. The species is variously known as the "kavu" or "kagou" in the Kanak languages, and as the "cagou" in French (also used as an alternative spelling in English). The kagu is a ground-living bird, in length. The weight can vary considerably by individual and by season, ranging from .
Creature of Havoc elf, the original thief of the Vapours, who the creature can extort for information on how to access the "Galleykeep", Marr's flying vessel. Aboard the "Galleykeep" Marr reveals the creature's identity and demands that he surrender Grog's box, which contains the Vapour of Elven Magic. If the creature is able to defeat Marr by destroying his portal, the necromancer is banished from the world of the living and the creature reverts into their previous human self, returning to his position as commander of the "Galleykeep". If the creature fails, Marr takes the vapour by force and it is implied that