Role in the Rook Trilogy
Stob was chosen to become a librarian because of his brilliant mind. He was, however, purely a scholar and lacked the sense of adventure of his fellow Librarian Knights, Rook and Magda.
On the beginning of their travel to the Free Glades, Stob endangered the whole mission by talking to a stranger he believed to be their person of trust. Stob successfully built his skycraft, the Hammelhorn and wrote a treatise entitled "A Study of the Growth Rings of the Coppertree".