Zeus was the supreme god of gods and Greeks. He was called Jupiter by the Romans and he received that name because it was believed he had the same powers as the Roman god Jupiter! His symbols are the eagle, the oak tree, the royal sceptre and the thunder bolt. Originally he was a god of the skies and high heavens and back in the day Greeks thought of him as the only god who concerned himself with the entire universe.
Greeks associated Zeus with justice and well being. He's believed to have greatly punished the wicked and maldoers and rewarded all that did good.
He received the lightening bolt from the Cyclops who were the giants that helped Zeus in the war against his father. He uses the lightening bolt for defence along with a bright golden shield with an eagle engraved in it.
Zeus had two(2) brothers. They were the god Hades who ruled the underworld and the god Poseidon who ruled the seas. His sisters were goddesses Hesta, Demeter and Hera.