Hexxus is a fictional character from the animated film FernGully: The Last Rainforest. He represents pollution and environmental destruction, taking the form of a dark, smoky entity. Hexxus is portrayed as a villain who seeks to consume the rainforest and spread his toxic influence. In the film, Hexxus is awakened by the cutting down of trees and the destruction of nature. His character serves as a metaphor for the dangers of industrialization and the importance of protecting the environment. The story emphasizes the need for conservation and the impact of human actions on the planet.