The messenger of the gods in Greek mythology is Hermes. He is known for his speed and cunning, often depicted wearing a winged helmet and sandals. Hermes serves multiple functions, including the guide of souls to the underworld and the protector of travelers. His role further extends to being the god of commerce, communication, and thievery. Renowned for his cleverness, Hermes often assists other gods and mortals in their quests, showcasing his importance in maintaining the balance between the divine and human realms in ancient Greek belief.