Which is the king of all gods in Greek mythology?

Zeus, the greatest of all the figures of Greek mythology, ruled over all the assembled gods and goddesses of the realm atop his mountain fastness on Mt. Olympus along with his wife Hera. He was the god of the sky, lightning, and thunder in ancient Greek religion. His mythology and powers are similar, though not identical, to those of Indo-European deities such as Jupiter, Perkūnas, Perun, Indra, Dyaus, and Thor.

Source: Greek Reporter