They are experimental Aquaroids, manufactured in the course of experiment of cloning Aquaroids from a single cell. Initially a project to clone powerful warriors from cells of famed generals, it was found in the long period of experiment that cloning cells from more capable Aquaroids is more complicated and difficult. It is now concluded that perfect cloning is impossible, with the exception of “Mass Production Sailors”, whose standards are intentionally adjusted below conventional Aquaroids. Though they have a sad upbringing, they are unable to think pathetically, as they are not given such complex processing system. Maybe that’s a good thing, because the tasks given to them on the battlefield are far more merciless than such past.