Knowledge Seekers

The Knowledge Seekers are the fox-like spirit assistants of Wan Shi Tong. They travel the world, collecting knowledge for the Spirit Library. When Aang, Sokka and Katara discovered the remains of an old peice of paper that mentioned "The Darkest Day in Fire Nation History", one of the knowledge seekers led them to an ancient mechanical calendar that depicted the movements of the heavanly bodies. This allowed them to discover that Firebenders lose their bending during a solar eclipse.