Duseuso was the lead historian for the Journal of the Whills on Ashlan Four in the years following the Galactic Civil War. Originally a novice historian, Duseuso began his research by looking into the time stream in an attempt to chronicle the life of Annikin Skywalker for the Journal of the Whills. Ussej Padric Bac, the Shaman of the Whills, told him that there was a different interpretation that could be provided from the time stream. Ussej then recounted his own experiences with Annikin Skywalker throughout Skywalker’s life.