Board Thread:General Discussion/@comment-28814491-20170506023810/@comment-27701762-20170506032415

Having seen theories like this before, and even this specific version where the "mysterious second person" is argued to be Napstablook, I'm no longer particularly interested in the long, point-by-point debunkings.

So I'll just address the basic premise for the whole thing:

PipMcGee wrote:

In the true lab, we see multiple logs (8, exaclty, I'll explain soon) from Alphys recording her expiriments, but in entry Number 9, the style of writing changes. The person writing does so in lowercase. There are only two monsters I know of who speak in lowercase, Blooky and Sans, like how Papyrus and Mettaton speak in Capital letters.

Aside from the discrepancy between this version and the normal version of the "two writers" theory (where Alphys is presumed to be the author of the lowercase entries), the statement that Napstablook and Sans are the only two monsters that speak in lowercase is false: Alphys's UnderNet updates are written in a combination of all uppercase, all lowercase, and a mixture of the two, along with speaking "normally" in her dialogue (and her properly written note directing the protagonist to the True Lab). So Alphys is a clear example of someone who could be the author of the lowercase entries. And once she is added, there is no more mystery: she was obviously working in the True Lab, was friends with Mettaton, and was known to be working on Mettaton's robot body.

Positing that the author of Entry 11 is Napstablook not only does not solve anything, but creates a whole host of problems.