 The completed design remained similar, removing the tentacles and reducing the oxygen tanks to a singular one positioned on its back, angled towards its right shoulder.The Rosie's rivet gun itself went through progressive design improvements, with the intent of making it "more fleshed out and threatening".The Bouncer model of Big Daddy featured it encased in a heavier diving suit than the Rosie, with the helmet more heavily armored and having multiple smaller holes for viewing.