Board Thread:General Discussion/@comment-32182236-20190721003717/@comment-32182236-20191008174251

A nice addition indeed. And that monster can't be Papyrus or Sans, since the handwriting doesn't match.

The only other mandantory encounter we have is Doggo, who can't see moving things-So he can't be the one that added it in.

So if this possibility is the correct one, Papyrus told another monster about the human and the human's trait, and that monster is the one that added it in.

However, 3 on the list is redundant anyway. It still wouldn't explain where the cyan trait came from, and so faces the same problems as 1, and requires an extra assumption. Given this, I'm going to be eliminating 3 for now, by Occam's Razor. That is, until I find evidence that Chara's trait was not taken into consideration when the game was being made.