Parthevia Empire (パルテビア帝国, Parutebia Teikoku) is the home country of Sinbad and Drakon.
Not much is known about this Empire, but it have been mentioned that Sinbad had a history with Al-Thamen here. Parthevia was a small country that was fighting to break free from a continent near by. Parthevia won the war against this near by continent and renamed itself to be the Parthevia Empire. The army paid the citizens gold for the victory of the war. But after the war with the Reim Empire, which forced Parthevia to yield some parts of its territory, Parthevia fell into economic difficulties and imposed harsh taxes on the people. People's food supplies, properties, army, everything was taken away. Not going to was became a shameful thing and thus the word "ex-patriotic" rose. It was said to be a strong and influential nation, but it appears to be on decline.
40 years ago, Parthevia army invaded Musta'sim Kingdom but failed due to the kingdom's use of magicians.
The first Dungeon, Baal, appeared on the border between Parthevia and the Reim Empire 14 years ago.
Most citizens have black hair. But purple hair and amber colored eyes might be a characteristic of the people from Parthevia.
Spiders might be some symbol since Drakon, Myers and Parthevia's Emperor have a black spider on their Parthevian clothes. Princess Serendine is called the Venomous Spider Princess of Parthevia.
Parthevia appears to be based on Ancient Persia. Parthevia's name comes from the Old Persian word Parthava, meaning the adjective "Parthian", as in the Persian Parthian Empire. One valid way of writing "Parthava" in Japanese is as パルタバ Parutaba, which is very similar to パルテビィア Parutebia. Ancient Persia had a series of conflicts with the bordering state of Rome, just like the Reim-Parthevia conflict(s). Many inhabitants of Parthevia have real modern or ancient Persian names, or at least have names that seem to be styled to have a Persian feel to them.