The Great Wizard is a root with a large amount of wrinkles under his eyes. He has a long nose and a grassy coat around his head, like a mane. He has branches growing out of the top of his head and tall legs.
The Great Wizard is the guardian of the stones, used to open the door from Ithersta to other realities, and the only one able to use them for such a purpose. He is able to resurrect the fish Fran caught to solve one of the riddles of the Star of Ithersta. However he may only resurrect other beings if the circumstances are positive, which he also mentions is often not the case.
After obtaining their scent, the Great Wizard can restore humans to their original bodies, as he does when Fran turned into a tree. The Wizard mentions that Fran's transformation is the first he's done in hundreds of years.