The series' co-creator Yoshio Sakamoto recalled, "We were partway through the development process when one of the staff members said 'Hey, wouldn't that be kind of cool if it turned out that this person inside the suit was a woman?'"
Seriens medgrundare Yoshio Sakamoto mindes, "Vi var halvvägs genom utvecklingsprocessen när en av medarbetarna sa 'Hörrni, visst vore det lite häftigt om det visade sig att personen inuti dräkten var en kvinna?'".