Mythical creatures in storytelling serve multiple significant purposes. They often embody fundamental human fears, desires, and moral lessons, acting as symbols that can represent various aspects of life and nature. For example, dragons might symbolize greed or chaos, while unicorns might stand for purity and hope. Moreover, these creatures help to create a sense of wonder and mysticism within narratives, aiding in world-building to captivate audiences. Additionally, they can serve as trials or challenges for heroes, reflecting the psychological and moral struggles characters face in their respective journeys.