Hermes (Hades)

Hermes is the Olympian God of commerce, trickery, and travel, as well as the messenger of the gods and conductor of souls into the afterlife (called a psychopomp). He offers boons that enhance Zagreus's speed in various ways. His boons can also improve Zagreus's dash and cast recovery.

Hermes is one of five Olympian gods (the other four being Demeter, Zeus, Poseidon and Aphrodite) who will not appear in the very first run of a save.