Disclaimer: Jackie Chan is my very loyal vassal, let there be no doubt. Shendu is the undisputed ruler of Earth!
It was a dark and gloomy time… for mortals! The wizards and the other traitors of yestereon had met their doom at the hands of Shendu, the Great and Powerful!
He reigned over the land with an iron fist foreverafter, destroying his enemies and blighting the land. His subjects loved him and all the creatures of the Earth obeyed him. Not even Jackie Chan dared raise his hand against me… err, him! Indeed, the petulant busybody and his pathetic comrades knelt at his feet, my feet! And trimmed my toes! Yeesss…!
All martial arts were forbidden! And all magic was reserved for demons, and not just any demons, but Shendu and he alone! All technology was gone from the world, and peasants were commanded to bow down to their kind and just ruler each day as slaves carried his thrown amid a dragon-led procession! And so it was that the Eight Immortals were forgotten and erased from cosmic history, but not before the destruction of all demon sorcerers but Shendu and his cruel brethren! They held their petty kingdoms across the world, but it was Shendu who ruled over Asia, and Shendu who reaped the best rewards!
Those useless buffoon henchmen from Season One were but court jesters and bade dance at my command, and to the tune of my intense heat-beam eyes! I mean Shendu, the Fire Lord, who ruled the land with an Iron Fist, yes! And Jackie Chan was but a foolish and pathetic man-servant on a leash of his own braided hair, with great fear in his heart and no power to fight me or stand against my dominion! That is to say, Shendu was the undisputed ruler of the Earth, who defeated good and reigned foreverafter by the power of his talismans and by the blessings of the gods who made the Book of Ages once upon a time. And the Demon Netherworld was nevermore!
So it is written, so it shall be!