Furolesios, known to the European market as Hydrazoid, is a plesiosaurus-type Zoid designed for amphibious combat. More at home in the water than on land, it has flippers, unlike the later Empire Brachios design, and uses massive ballast tanks to become capable of proper underwater operation. Being one of the first Republic Zoids designed for this purpose, it was, for a time, one of the stronger Zoids in the water, and along with Aquadon formed the bulk of their naval force.