Hermes

HERMES (HUR-meez; Roman name Mercury) was the messenger of the gods and guide of dead souls to the Underworld. A prankster and inventive genius from birth, Hermes aided the heroes Odysseus and Perseus in their quests.
Hermes was the son of Zeus and a mountain nymph. As a newborn he was remarkably precocious. On his very first day of life, he found the empty shell of a tortoise and perceived its utility as a sounding chamber. Stringing sinews across it, he created the first lyre.

Hermes was known for his helpfulness to mankind, both in his capacity as immortal herald and on his own initiative. When Perseus set out to face the Gorgon Medusa, Hermes aided him in the quest. According to one version of the myth, he loaned the hero his own magic sandals, which conferred upon the wearer the ability to fly.