|Season unknown, Episode unknown|
Gruffi destroys the Great Book of Gummi by accident, and ruefully he travels with Cubbi to the lost Gummi city of Ursalia to find a replacement. But despite the fact Gummis have departed centuries ago, the ruins of Ursalia are still inhabited -- by the scatter-brained, kind Gummi Sir Thornberry and the evil witch Lady Bane.
- First appearance of Lady Bane and the Troggles.
- One of Troggles does the Goofy scream.