Logix Logy Ficsario is one of two protagonists in Atelier Escha & Logy: Alchemists of the Dusk Sky and appears in Atelier Sophie: The Alchemist of the Mysterious Book. He was later added as a playable character in the plus version of Atelier Shallie: Alchemists of the Dusk Sea, but was not available in the original version. He makes free use of the latest style of an "alchemic sword", an improved version of an artifact that was excavated from the ruins that combines the art of swordplay and alchemy. His hobby is to create various such swords.