PrePub - Ascendance of a Bookworm

I am absolutely certain that none of the doubles are living magic tools. Schwartz and Weiss are the pinacles of that technology and they very clearly aren't able to pass as Human, even if you give them a body that would pass visual inspection. There's also the issue of mana usage. Even the combat shumil, which have drastically reduced capabilities, still have immense mana concumption, to the point that without someone of royal family level of mana, they can only be run a couple of hours at a time. There is no way Grausam would be able to operate multiple of those at the same time.

Furthermore, how would he have been able to learn to make them? They were originally invented by an absolute genius in magic tool creation, with access to the full ressources of the Zent. It was only by chance that through Rozemyne's library blessing Hirschur got the chance to copy their magic circles, and even then it took her and Ferdinand's combined efforts to complete the circles and make their own version.

I really can't believe that Grausam could either just figure this technology out on his own, or gain access to Hirschur's blueprints. Not to mention that it would once again drop him back into the mana usage hole and that he already had those doubles, before Rozemyne became the master of Schwartz and Weiss the first time.