In Greek mythology, the figure who aids mortals in their quests as an intermediary is Hermes. Known as the messenger of the gods, he facilitates communication between the divine and human realms. Hermes is also the guide of souls to the underworld, illustrating his role in transitions. His characteristics include cunning, agility, and protection of travelers and merchants. By helping heroes navigate their challenges, Hermes embodies the qualities of wisdom and strategy, showcasing the diverse relationships between gods and humans in mythology.