Alexander Xerxes XII

Alexander Xerxes XII was the Emperor of Decarte during the First Ashlan Civil War. He sided with Aquilae and helped them in the capture of the Crowned Princess of Ondos. After the war ended and the alliance between Kal'Shabbol, Had Abaddon and Ondos was victorious, Xerxes signed a peace treaty with the other planets in the Ashlan Expanse and Decarte was able to live in peace for thousands of years.

Behind the scenes
In George Lucas' original drafts of Star Wars, Emperor Palpatine was originally known as Emperor Ford Xerxes XII and then later Emperor Alexander Xerxes XII of Decarte. Author Brandon Rhea used these original plot elements as a basis for the character Alexander Xerxes XII.