Yes.
In the Odyssey, he did not go into the Underworld but merely summoned ghosts of the dead to speak to him.
No. Ghosts have no physical existence so they have no structure of any kind.
Not realy because there is no such things as ghosts but there is such things as spirits wich is kind of like ghosts.
No. Ghosts do not exist.
There aren't any ghosts
He did not go to Hades, he summoned the ghosts of Hades to earth to speak to the blind seer Teiresias, who could foretell what would happen to him on his journey.
shadow ghosts- blackfigures with glowing yellow eyes
If there are ghosts anywhere there are ghosts in Mexico. I do not think that there are any ghosts anywhere though!
you cant you can only if you have some kind of effect,spell or trap
Destiny Hero Dogma cannot be special summoned, except from in hand, by tributing three monsters. As an 'except by' monster, that means the listed method is the only way he can ever be summoned. He cannot be summoned by any other means, even if he was properly summoned first and then went to the graveyard.
Not that I am aware of. But there could be if you believe in ghosts.
Ghosts like mean and greedy people so they can have a reason to pick on them, and be bastards.