Board Thread:General Grimm Discussion/@comment-64.231.120.181-20150211051848/@comment-201.75.248.32-20160222000659

I think it's some kind of ultimate weapon that allows every person in the world to see Wessen on their true form, they created this weapon as a last resort in case the Wessens try to take over the civilization and they hid it because if used carelessly it would cause mass panic.