Fern Gully: The Last Rainforest is a 1992 Australian-American animated fantasy environmental film directed by Bill Kroyer. It was produced by Peter Faiman and Wayne Young, with the screenplay written by Jim Cox adapted from a book of the same name by Diana Young. The film features the voice talents of Jonathan Ward as Zak, Samantha Mathis as Crysta, Tim Curry as Hexxus, Robin Williams as Batty Koda, and Christian Slater as Pips. Crysta is a fairy with a curious nature living in FernGully; a part of the rainforest devoid of human life. As such fairies believe humans to be extinct thanks to Hexxus; a malevolent creature who had drawn them out of FernGully many years before. Crysta is the apprentice of Magi, a motherly-figure fairy who uses the magical arts to grow plants, who warns her of her rampant curiosity. One day Christa leaves the forest to an area she had never been before and meets Batty Koda, a bat who claims to have been experimented on by humans, who stuck a radio antenna to his head, giving him an unstable personality. She does not believe him until she encounters a group of lumberjacks cutting down trees with a leveler. She sees Zak, a young human who is about to be crushed by a tree, and Crysta uses her powers to accidentally shrink him to "fairy size." and Batty rescues them from a spiderweb immediately after.