Major Sule Tesdor is a wizard of Marali. Since Nyatha Vaup's disappearance, he has been in charge of the city, together with Major Cesca Andon. Tesdor is often too busy to be seen by visitors of Marali, not only with his new duties as a city leader, but also with his own research on wizardry and magic. He is the head of Maralian wizards, and it is known that his research team tries to keep up to date with the scientific discoveries of Oberin, e.g. they too were seeking to purchase magic stones for some private testing at the time of Seth's illness. Nonetheless, Tesdor accepted to accompany Evers to the Central Island to supervise one of her experiments with the stones in the Waking Moon of 431. He did not seem to be proficient in Black Magic, by then, beyond some rudimentary spells.