Neptune, was the Roman equivalent of the Greek Poseidon. I've never heard of any other names for him.
Neptune
the function of Poseidons temple was for Poseidons honor.
Poseidon's sign is a trident. Other signs include horses and an earthquake.
Rhea.
cronus
Cronus and Rhea
Triton
Rhea.
a trident
He doesn't had friends
In myths, he does not have one.
you don't