Board Thread:General Discussion/@comment-26006155-20181123023529/@comment-26006155-20181211232659

(continued)

....For one very powerful all-consuming reason.

Sans IS Frisk.

While this may seem like a radical theory at first, Undertale has been hinting at this relationship from the very beginning.

The first time you see Sans he’s viewed in silhouette, and his sprite size is so similar to Frisk’s that it’s uncanny. If you put on an oversized skeleton head and baggy set set of coat and pants on Frisk, he might look exactly like Sans.

The Convenient Lamp shows that Sans has a pixel-perfect knowledge of what Frisk is going to look like when he arrives. Something he could easily calculate by measuring himself.

Sans loves to wink at Frisk and make statements with a hint of private irony. At the MTT diner he asks “Haven’t I done a great job protecting you? I mean, look at yourself. You haven’t died a single time!” and if you really haven’t died once yet he adds “That’s right. Well (wink) chalk it up to my great skills.”

In the Judgement Hall, the last time you see Sans on a neutral run, Frisk and Sans are both in silhouette under identical stained glass windows, with a pillar separating the two of them, almost like one was the mirror image of the other. And it’s in this room that you can get the greatest clue of all: The key to Sans’ Room.

If you exit the game after Sans’ talk, then reload repeatedly, Sans will realize that you’ve heard his talk before, and give you a set of very childish codewords to say to him next time, to prove that you’re a time traveler, just like he is. And after the final sequence Sans will wink and says “So, I guess you’re qualified. Here’s the day to my room”. Then, closing his eyes, he says “It’s time.. You learned the truth.”

And when Frisk looks at his keychain, he discovers that the key was already there.

Frisk does have a keychain, he puts the keys from New Home on it. But the game never gives us a way to actually check what keys are on this chain. And it could well be the case that the key to Sans’ room was ALWAYS on Frisk’s keychain, and he simply didn’t remember what it was. Sans’ room might have a note that says “you got owned, nerd…” but it also contains the Silver Key that opens the workshop behind Sans’ house, which contains the last artifacts Sans has from his friends from the other world. And possibly the time machine that brought both Sans and Gaster here. “The Silver Key” was an H.P. Lovecraft story about time travel.

Sans will only reveal this key to Frisk if Frisk is completely innocent. In the same manner that Sans will only fight Frisk if Frisk has been completely evil up to this point. It seems that Sans has made this trip not once, but many times, and has encountered many different versions of himself in each dimension, using the game as a way to test Frisk to see if he really is someone who might be able to get the best ending that Sans can no longer achieve. Or someone who might use their growing power to destroy reality, who Sans has to stop.

This is the final horror of the Genocide route. After killing all the monsters, and all those who had once been his friends, Chara-possessed Frisk has his truly final fight in the Judgement Hall, against Sans, trying to kill a future version of himself. And if Frisk succeeds.. Frisk dies. As surely as if he sank that knife into his own chest, as Chara takes him over completely and claims his own soul for her own.

Sans, then, does act like the perfect judge. And the endgame reveals that Sans has known Alphys this entire time. She’s probably patched him into the camera network that she’s been using to monitor Frisk since he first stepped into the Underground. And Sans’ phone calls reveal that Sans knows there are dogs in Alphys’ lab. Something he would only know if he’d been to the True Lab himself, and met the Amalgamates.

-- Chapter 7: Approaching Gaster --

Alphys claims the only reason monsters have modern human technology is because of the junk that’s fallen down the waterfall into the Underground, which diligent hunters like Bratty and Catty have salvaged. This is why monsters have cell phones. Even Toriel has a cell phone, showing she still has -some- contact with the Underground after all.

But without actual contact with the surface, the monsters also have no frame of reference to gauge human civilization, and Undyne for one is shocked to learn that Anime and it’s giant robots aren’t real, but only fanciful fiction.

And it’s easy to understand why people like Alphys might be confused.. Because the technology she works with EVERY DAY is actually more advanced that what most humans have above.

Building massive structures directly on lava that don’t instantly melt or burn to cinder? Cell phones that turn into jetpacks? Transforming sentient robots that actually WORK? Dimensionally-linked boxes that are so commonplace that monsterkind finds them about as interesting as a cardboard box? Buildings that can automatically re-arraigned their interiors to created a deadly labyrinth of lasers that can hold the residents of the Core hostage within their own home? Dimensional portals that can hurl people across time and space?

Monster technology is anime made real, and far more advanced than anything the average human has above. Only a truly mad genius would have the ability to create such wonders, and horrors, in equal proportion.

The very scientist who developed Determination Extraction in the first plase. The revered Wingding Gaster.