Hexxus (voiced by Tim Curry) is the main antagonist of Jaden Goes to Ferngully: The Last Rainforest. He is the anicent spirit of destruction, who was imprisoned inside a tree years ago. But when humans cut it down with their tree leveler, Hexxus was released, and wanted revenge on Ferngully. He tricked the humans into heading into the direction of Ferngully, and gained power from the pollution the machine created. During a battle, after a good human named Zak shut down the leveler, Hexxus lost his power for a moment until he became a giant skeletal monster made of oil. A fairy named Crysta stopped Hexxus by growing a seed inside of him into a tree, imprisoning him within the tree again.
- Hexxus will return for revenge in Jaden's Adventures of Fantasmic!
- Hexxus will become Jeffrey's enemy in Jeffrey & Friends go to Ferngully: The Last Rainforest.
- Hexxus will return for revenge in Jeffrey & Friends' Storm Adventures of House of Villains.
- Hexxus will become Aaron's enemy in Aaron goes to Ferngully.
- Hexxus will become Twilight's enemy in Twilight goes to Ferngully: The Last Rainforest, he later will become one of her and the Rainbooms' dangerous foes in Twilight's Adventures.