The fabled Greek hero known for his speed and agility is Hermes. As the messenger of the gods, he is celebrated for his swiftness and ability to traverse the mortal and divine realms swiftly. Hermes plays various roles in mythology, including being a guide for souls to the Underworld and a protector of travelers. He is often depicted wearing the winged sandals, signifying his exceptional speed and agility. Hermes is also associated with commerce and thievery, showcasing his cleverness and resourcefulness in navigating challenges.