The Lorax is a fictional character created by Dr. Seuss in the book titled "The Lorax." He represents the voice of the environment and speaks for the trees, advocating for the protection of nature against industrialization and pollution. The story highlights the consequences of environmental neglect and the importance of sustainability. In the narrative, the Once-ler cuts down trees to produce Thneeds, leading to environmental degradation. The Lorax warns the Once-ler about the impact of his actions, emphasizing the need for responsible stewardship of natural resources. The book serves as a cautionary tale about the balance between economic growth and environmental conservation.