My hypothesis is that the Germans made this while under heavy influence of Schnapps, then didn't know what to do with it and consequently shipped it to Japan thinking that perhaps the Japanese could use it somehow.
B****, please. The Monster would have used an 800mm cannon and been built in naval shipyards.
But anyway, all of this is useless if you can't build thousands of them.
Number of Kugelpanzers built: 1
Monsters built: 0
T-34s built: 84,070