Skyships of the Wastes
Vadia is a medium sized oasis which focuses on agriculture that has been under the rule of the Empire for about two generations. The native Vadians still chafe under the rule of the imported Imperials who administer their government. The city dwellers tend to speak a heavily accented version of Imperial Standard with a lot of words from the original Vadian language, while the obreros (farmers and other laboring folk) still speak Vadian, though most understand a little Imperial Standard.
The man known only as Los Azul Shadow is a masked folk hero who swoops in to fight oppression where ever it is found in Vadia (think Zorro). He is called that because he wears all dark blue, the color of the Vadian flag before the Imperial conquest. He appears where he should not be able to, fences with guards, frees the prisoners, sweeps the beautiful woman off her feet, and vanishes without a trace. He may be more than one person, as he first appeared over 50 years ago, but is still quite spry. His efforts, while valiant and heartening, have not really ended oppression though, and the obreros still have a harsh life.