Zeus is the sky and thunder god in ancient Greek religion, who rules as king of the gods of Mount Olympus. His name is cognate with the first element of his Roman equivalent Jupiter. His mythology and powers are similar, though not identical, to those of Indo-European deities such as Jupiter, Perkūnas, Perun, Indra, Dyaus and Thor.

Poseidon was god of the sea, earthquakes, storms, and horses and is considered one of the most bad-tempered, moody and greedy Olympian gods. He was known to be vengeful when insulted. He is the son of Cronus and Rhea and was swallowed by his father along with Hades, Demeter, Hestia and Hera.

Ares was the Greek god of war and perhaps the most unpopular of all the Olympian gods because of his quick temper, aggressiveness, and unquenchable thirst for conflict. He famously seduced Aphrodite, unsuccessfully fought with Hercules, and enraged Poseidonby killing his son Halirrhothios. One of the more human Olympian gods, he was a popular subject in Greek art and even more so in Roman times when he took on a much more serious aspect as Mars, the Roman god of war.