4x21 - Hercules: The Legendary Journeys

Upon Alcmene's death, Zeus asked Hercules to join him in ruling the gods of Olympus. Hercules, still bitter toward his father, couldn't decide. He recalled meeting Apollo, his half-brother, years ago. Apollo gave him ambrosia, which transformed him into a full god. But Zeus chastised his son, saying he was never destined for full godhood. Chagrined, Hercules relinquished his new powers but still fought Apollo to a draw. he then saved young Ariadne from Apollo's treachery. This recollection resolved Hercules' indecision: He agreed to join Zeus on Mount Olympus, where he could do the most good for mankind.