One of the most distinctive aspects of Ulises 31 is its unique visual aesthetic. The character designs were handled by , a legendary anime artist famous for his work on Saint Seiya and Captain Harlock , giving the series its elegant and expressive look. The animation itself, produced by TMS, was of a remarkably high standard for a television series of its time, utilizing traditional techniques like painting on cels, cut-outs, and multiplane cameras to create a rich, atmospheric visual style.