Jupiter, in Roman mythology, king of the gods and supreme ruler over the entire universe. Patterned after Zeus, king of the Greek gods, Jupiter overthrew his father, Saturn, and married his sister, Juno. Jupiter's other brothers and sisters were Neptune, Pluto, Ceres, and Vesta. His children were Mars, Vulcan, Apollo, Bacchus, Mercury, Diana, Hercules, and the 9 Muses of the arts. Jupiter's temple on the Capitoline Hill in Rome was the focal point of Roman polytheistic worship.
See also: Mythology.