Jaygarcia Saturn's title 'Warrior God of Science and Defense' is significant as it speaks to his dual roles within the world of One Piece. As a scientist, he uses his knowledge and expertise to develop strategies and technologies that aid in defense. His 'warrior god' status indicates his high rank and formidable power, suggesting he's not just a thinker but also a fighter. This title also hints at his antagonistic role, particularly in the Egghead Arc, where his scientific prowess and defensive strategies come into play.