Mister Tralls was the Current Events teacher at the Junior Academy of Applied Sciences in Lothal's Capital City. As a teacher, Tralls used his Current Events classes to promote propaganda defending the Galactic Empire's developmental projects. On one occasion, he taught Zare Leonis and his class a distorted version of the Trade Federation's crop engineering program on the planet Chrona. According to the official Imperial version of history, the Trade Federation deliberately engineered a famine by suppressing crop harvests in order to render the local population dependent on their medical services—on which they had a monopoly. Tralls lectured that the Galactic Empire had saved the day by nationalizing agriculture and reintroducing the modified crops.