going back to page 3's keyblade argument on if keychains r neccesary, if u played the original kh, rikus keyblade after he became possesed by ansem had no keychain and had its own special ability to unlock something. keychains just give keyblades another form and capability, but doesnt change its original purpose, such as soras keyblade locks the keyholes of each world, and riku-ansem's (thats what i call riku when possesed) keyblade unlocks peoples hearts. the keblade the armor guy has probably has a purpose too.