Zeus is the king of the Gods in Greek mythology. He had 14 kids, they are Ares, Athena, Apollo, Artemis, Aphrodite, Dionysus, Hebe, Hermes, Heracles, Helen, Hephaestus, Perseus, Minos and the Muses. You can find more information here: http://en.wikipedia.org/wiki/Zeus
Zeus has 10 known children but it is possible that he had many more. Greek myth tends to be very fluid. Some accounts have him as having upwards of 26 immortal children and several mortal ones. It depends on which myths you read.