The king of them, Zeus, ruled Olympus and the other gods. All of the gods ruled Earth. So those were the two worlds they were in charge of.
Castor and Pollux were twin Greek gods.
The 'Roman Names' were worshiped and known to the Romans before the Greek; when the Greek people were conquered, their gods and goddesses were incorporated into the Roman gods and goddesses; so it is that it is near impossible to now tell the difference between the two. That, by the way, was a common practice of the Romans, adopting the gods and goddesses of the people they conquered/ruled.
Zeus-King of the Greek gods Hera-Queen of the Greek gods and Zeus's wife
In Greek Mythology, Argolis was divided into two sections: Argos which was ruled by Acrisius and Tiryns which was ruled by Proëtus.
Because the Romans 'stole' the main Greek gods and renamed them. e.g. Poseidon (Greek) = Neptune (Roman)
Zeus and hades
All of them believed in it; they were immortal.
The Greeks believed that the gods created the world and held balens between the two worlds.
zues,greek god and hera
Two things: 1) Greek gods are immortal, Apollo never died. 2) Greek gods have no age. What you read in comic books or Percy Jackson is not true Greek myth.
The Titans were the elder gods. They came before the lesser gods, which are the gods of mythology. Two of the most famous Titans were Atlas and Prometheus.