Board Thread:Applications/@comment-27834277-20170101164059/@comment-27701762-20170101165423

I mean...it's fine in terms of headcanon, but pretty much anything is. But it's not really a theory, because there's absolutely nothing to actually support it. There is no mention of a wife to Gaster, or anyone else related to Sans or Papyrus. While logically they would have to come from somewhere, and Gaster could be related if W.D. does in fact stand for Wingdings, moving from that to "this sprite is Gaster's wife" is a leap that is impossible in terms of the story itself, as absolutely nothing suggests that reading. The idea is pulled completely out of the air.

Again, that means it's fine for headcanon, since basically anything is fine for headcanon. It's just not a theory.