Board Thread:General Discussion/@comment-26006155-20190820122909/@comment-26006155-20191029124338

Alright, so my theories state that Gaster/Doctor Andonuts was already infected by Gigas before he and Sans even made the trip. So I suppose he was an amalgamate of sorts from the beginning.

I don't claim to understand how all of this works. But it seems like Mysteryman has a lot of Determination.