I was reading on RPGClassics.com that when PSIII was released quite a few enemies never made it into the worldwide release version. But the enemies are still located in the rom they just don't show up kind of like the shadmirage in PSIV.
The unseen enemies are as follows:
Monsters: Imp, Shiek, Gryphon, Jumpliz, Skeleton, and Spectre
Cyborgs: Wirebot, Guardbot, Disker, Twistbot, Swivlbot, Rotabot, and Finis
If someone was good at rom hacking it is possible to get the images of the enemies. Well so I read
