Ever since the series' beginning, Haruki Suetsugu was impressed by the handling of the relationship X and Zero had. From his point of view, X was a character who often makes mistakes in combat yet tries again in order to improve. As a result, the artist felt he could relate with X. X was written to be a "B class" Hunter in contrast to Zero being "Special A" rank. This allowed him the draw more frequently across the series. Nevertheless, he regretted some of his illustrations as X lacked the cool appeal Zero originally had.