Chiron = Cheiron = Hand was a wise centaur (half-man, half-horse) known as a tutor to Jason (the leader of the Argonauts), and tutor to Heracles (a demi-god). Cited from website Centaurus Born of sun and raincloud, rendered by Greeks of the Classic period as from the union of the king Ixion, consigned to a fiery wheel, and Nephele (cloud), whom in the Olympian telling Zeus invented, to look like Hera.