Zeus 

Zeus is the Greek God of the Sky and King of the Gods

Often referred to as the “Father of Gods and men”, he is a sky god who
controls lightning and thunder. Zeusis king of Mount Olympus, the home
of Greek gods.

When he was born, his father Cronus intended to swallow him like all of
Zeus's siblings: Poseidon, Hades, Hestia, Demeter and Hera. But Rhea hid
the newborn in a cave on Mount Dicte in Crete. And when he grew up he
went to war and won and gave his siblings what they are gods of based on
there names. 

Zeus is important because he is the king of the gods. According to Greek
myth, Zeus was the god of the sky, and many ancient Greeks thought Zeus
could control natural phenomena, such as controlling the weather and
throwing lightning bolts at his enemies.

This is just a random fact that i added 

In Greek mythology, Zeus and Hera were brother and sister as well as
husband and wife. They were the children of Cronus and Rhea (also married
siblings). Cronus and Rhea, in turn, were children of Uranus and Gaia (a son
who took his mother as consort, in some versions of the myth).