Talk:W. D. Gaster/@comment-92.239.48.109-20151004195411/@comment-27057609-20151011003854

One of the major things to take from this is that it never specifies which experiment/creation went wrong, and which he fell into. It's possible the core is a perfectly working product, its only noteable maintenance really being the blocks of ice provided from Snowdin. So it's perfectly possible that the "gaster" weapons were things that malfunctioned, or possibly any Determination operated devices.

So mysterious...