Hercules fights with the gods against the giants (Gigantomachy)
To the island of Kos sent to To Hercules father Zeus his beloved daughter Athena-Pallas to summon the great hero to help in their fight against the giants. Giants were born by the goddess Gaia from drops of blood of the deposed Crown Uranium. They were monstrous giants with snakes instead of legs, with shaggy long hair on their heads.
The giants possessed terrible power, they were proud of their might and wanted to take away the power over the world from the bright Olympian gods. They engaged in battle with the gods on the Phlegrean fields, which lay on the Chalcidian peninsula of Pallene. The gods of Olympus were not afraid of them. The mother of the giants Gaia gave them a healing remedy that made them invulnerable to the weapons of the gods. Only a mortal could kill giants; Gaia did not protect them from mortal weapons. Gaia was looking all over the world for a healing herb that was supposed to protect giants from mortal weapons, but Zeus forbade the goddesses to shine - the dawn Eos and the moon Selena and the radiant sun god Helios and cut the healing herb himself.
Not fearing death at the hands of the gods, the giants rushed into battle. The battle lasted a long time. Giants threw huge rocks and burning trunks of ancient trees at the gods. The thunder of battle resounded all over the world.

(Bas-relief from the altar of Zeus, located in Pergamon, II century BC)
The giant is Polybot, fleeing by sea from the pursuit of the formidable earthshaker Poseidon, fled to the island of Kos. With his trident, Poseidon broke off a part of the Scythe and piled it on Polybot. So the island of Nisyros was formed. Hermes defeated the giant Hippolytus, Artemis - Gration, the great moira giants Agria and Foon, who fought with brass clubs. All the other giants were struck down by the thunderer Zeus with his sparkling lightning, but death was sent to them all by the great Hercules with his arrows that do not miss.