I just noticed something about Diaclone Battle Convoy. If it was an early release of Optimus Prime before he was Optimus Prime, and it was released in Japan-only, why were the words "Diaclone" and "Battle Convoy" written on his trailer in English and not Japanese? I'm sure this was possible on other early Japanese releases as well. Is there anyone who knows enough about this that can enlighten me? THANKS!!