Board Thread:General Discussion/@comment-27907368-20160514064034/@comment-4995895-20170111105036

GetYourFix wrote:

 Sans (and company) knows about many of the protagonist-oriented functions of the game.

He knows about STATS, consumables and turn-based combat. Though other characters such as Gerson know the limitations of the protagonist, Sans knows more than other NPCs about what the protagonist is able to do.

Other characters with some protagonist/player-based knowledge include Papyrus and Alphys; they tell the protagonist which button to press to jump and shoot, respectively.

Some other mentions:

The sign in the ruins dumbly states "Press Z to read signs!"

One of the Froggits mentions F4, although he doesn't know what it is. Another Froggit talks about the spare text colours like they're a physical thing, so hmmm...

Flowey calls Papyrus 'one of my favorite characters to mess around with". Character. Not monster or person. Character.