It is operated by Joerg Rosenberg, dedicated to the construction of puppetry.
Publicly, the studio creates dolls that are in high demand among wealthy collectors and is also responsible for the mechanics in the stage of Arc en Ciel.
C's group visit the Doll studio in search of Lapis Rosenberg's memories or the meister himself. They discover the interior has been modified with deadly traps including lasers and an assortment of archaisms and mechanical creatures. After navigtaing thier way through, the party is split up and come face to face with F. Novartis's simulacra of figures such as the Emperor, Harold and Sophia Hayworth and numerous copies of Lapis herself.