Board Thread:General Discussion/@comment-27524978-20160210030742/@comment-28394344-20160802071826

Oobooglunk wrote: The Duck Test doesn't literally refer to appearance or traits (at least, it doesn't have to). And even disregarding aesthetics (as well as the badge), with the similarities between EarthBound and Undertale in mind, who else would Sans be? No main EarthBound character is comparable in personality to Sans except Ness, since the latter is an avatar for the player and is supposed to feel whatever the player feels. But do these similarities require Sans to be Ness? I might agree on Sans sharing those for the sake of Ness if they are treated as references to Ness, after all...

I mean, if you're comparing this to ducks, I would say i see Sans and Ness as two ducks of different species: pretty similar to each other, both belong to Anatidae family, and yet they are being differed in a way...

If you want to make a convincing argument, you need to present evidence to back it up. After all, look at the people saying Toby Fox "debunked" the theory. None of his tweets, posts, etc. suggest any such thing. For all I know, you could have remembered a cutscene incorrectly (not saying you did, there's just always a chance). I'm sorry if finding/watching a YouTube recording of Papyrus' date was too difficult to do (let alone the actual walkthrough to the point), as well as browsing his in-battle page for the matter of his "WELL...! 'HUFF' IT'S CLEAR... YOU CAN'T! 'HUFF' DEFEAT ME!!!" quote, but i hope the sweat on his skull at the date, and the aforementioned huffs at the fight (which we also can find at Sans' fight, and i presume these are the basis for a thought that Sans breathes) will suffice.

There's Papyrus being tied with plant wines along with the other characters, where the sweatdrops are seen a little more clearly...