The Greek gods are part of Greek mythology meaning they never existed. And if they did then they would still be around. The answer is either "never" or "forever". Since it was a religion and, thus, had answers for every possible proof against it it is not able to be proven wrong or correct.
They could, in theory, if the Greek gods actually existed, which of course they don't.
yes, and they still do.
The gods in Greek Mythology were just legends. Such as Atlas the god that held the earth and sky, and Zeus the god of all gods.
Before the gods were the titans who were rules by Cronus
The Titans existed before the gods and were more powerful.
The first gods that existed were Uranus and Gaia. Hestia, Posideon, Hades, Demeter, Hera, and Zeus were their grandchildren.
I believe you're asking about Pallas Athena,who was a greek mythological figure.In which case, pallas only "lived", (or existed) if your religion entails worshipping ancient Greek gods.
It depends on what you believe. If you do believe that the Greek gods existed and that Homer's stories are true, then someone can be a demigod.
No, the Greek gods are myth.
Yes, the Greek gods are immortal.
Gods from Greek Mythology:AphroditeApolloArtemisAthenaDionysusHeraHermesPoseidonZeus
They were never created, they were made by parents and born. Except for the first ones, Uranus and Gaea. In any case they existed before time.