During a revived search for the tessent, the guard became a major source of speculation, both as to whether he actually had the tessent in his possession and the location of his crashed shuttle.
The reason why a Guard of Aldera would have stolen the tessent is never given in the article, Race for the Tessent. However, it seems likely, given the number of typos and references confusing "Alsakan" with "Alderaan," that Alderaan was intended to be the world of origin. At some point, the location was changed and all references to "Alderaan" were changed to "Alsakan." This left a few vestigial terms such as "Aldera" in the final product.
The reason why a Guard of Aldera would have stolen the tessent is never given in the article, Race for the Tessent. However, it seems likely, given the number of typos and references confusing "Alsakan" with "Alderaan," that Alderaan was intended to be the world of origin. At some point, the location was changed and all references to "Alderaan" were changed to "Alsakan." This left a few vestigial terms such as "Aldera" in the final product.