HP - you're right on the money with Amapro Toys. It's a messy site, but this is where I stumbled on the above link: http://amapro.hp.infoseek.co.jp/ One of the links off the above page takes you to this toy shop where I think I found the kaiju painter. http://www.amazing-toy.com/index.html Other links off those pages show molds getting filled with concrete!! Will try to find them.
And how to stop the production: http://amapro.hp.infoseek.co.jp/kumonga.html http://amapro.hp.infoseek.co.jp/kamakirus.html