Sans Intelligence

[Mad_Dog_of_Fujiwara]

Also y’all need to stop downplaying sans knowing how many times he’s died via facial expressions. I don’t care if it’s “super specific to one area”. This ridiculous feat of deduction paired with the fact that he had some hand in the creation of the machine should be at the very least genius

*Created a machine of unknown purpose and complexity. That's hardly quantifiable. At that point you're just looking at the facial expression thing, which like..... that's impressive, but it's one feat in a very specific area, when he has 0 other feats supporting that level of intellect across the board. Not that it's an EG feat to begin with, anyways.

 

[BasedNecoScaler69]

*Created a machine of unknown purpose and complexity. That's hardly quantifiable. At that point you're just looking at the facial expression thing, which like..... that's impressive, but it's one feat in a very specific area, when he has 0 other feats supporting that level of intellect across the board. Not that it's an EG feat to begin with, anyways.

its implied sans isnt from the undertale universe, as he says he "gave up trying to go back a long time ago"

 

[Mad_Dog_of_Fujiwara]

its implied sans isnt from the undertale universe, as he says he "gave up trying to go back a long time ago"

So let's extrapolate that to mean the machine is somehow related to that, possibly through the use of dimensional travel/time travel, and is something Sans has built himself with no outside help whatsoever. Sure, alright. I get that this sort of theorizing is a significant part of Undertale, but it doesn't mesh well with VS debating, where we simply don't use theories like that at all (no matter how reasonable they may be).

 

[King_Dom470]

*Created a machine of unknown purpose and complexity. That's hardly quantifiable. At that point you're just looking at the facial expression thing, which like..... that's impressive, but it's one feat in a very specific area, when he has 0 other feats supporting that level of intellect across the board. Not that it's an EG feat to begin with, anyways.

Fine fair enough but even though the use of the machine is vague its still super heavily implied that he was a scientist or at the very least helped Alphys at one point or another, and the facial expression thing is easily enough to carry him into genius, I still think sans is extraordinary genius but at this point i'd settle for him not being downgraded to gifted.

Also i don't really know if this would actually help sans' case at all but in Deltarune he acts as though he remembers you even though up until that point he's never even seen you before.

 

[King_Dom470]

Last thing before I hop off

Genius: Individuals with an exceptional capacity for knowledge and intelligence, usually in one area of varying depth. This level of intellect is the level of real-world geniuses, polymaths, and genuinely extremely prominent intellectuals, and, in the absence of better feats, should be the default intelligence category for fictional characters with exceptional or superhuman intelligence.

I don't wanna hear nothing about it being "Mildly superhuman" because its not. It's so far into superhuman that this alone almost carries him to extraordinary genius.

 

[DaReaperMan]

It is mildly Superhuman tho

 

[King_Dom470]

It is mildly Superhuman tho

Nuh uh, Knowing you died in an alternate timeline because the guy who just walked into the room is smiling and thinking "He killed me twice" is ******* crazy not to mention he can count up his OWN deaths along with the players, and he knows that your a time traveler just by the way you act. His deductive skills are genius and thats objectively true.

And you know what fine even if he is "Mildly superhuman" that would still meet the requirements for genius as its certainly still an exceptional level of intelligence

alr now im off though

 

[RinneItachi]

Being a genius in-verse =/= being a genius on the wiki, just going to say that. Sure, he's made out to be that way in Undertale, but that doesn't necessarily give him any reasons to be a genius on this wiki.

Anyway, "at least Gifted" should be fine. The far higher part seems unnecessary.

Yeah that's why I said it's complex. By all intents and purposes Sans is a genius. But the level of a "genius" by the wiki is probably above what Toby had in mind. Definitions can be different. In fact when I looked at the Gifted description again I was very surprised at how intelligent a "Gifted" character was considered by the wiki to be, and makes me feel like the name should be different as the word "Gifted" doesn't really do that description justice. If a kid has full A+'s across all academical fields in high-school, most people irl would call them gifted for it.

But yes I agree with your point. I think the main issue causing this discussion is in the specific names and definitions in question, not actually about how intellectually capable Sans is.

 

[RinneItachi]

Nuh uh, Knowing you died in an alternate timeline because the guy who just walked into the room is smiling and thinking "He killed me twice" is ***** crazy not to mention he can count up his OWN deaths along with the players, and he knows that your a time traveler just by the way you act. His deductive skills are genius and thats objectively true.

And you know what fine even if he is "Mildly superhuman" that would still meet the requirements for genius as its certainly still an exceptional level of intelligence

alr now im off though

"is smiling" We don't really know how Sans ascertains these deductions, just that he does it from expressions. Expressions can translate many varying different meanings, and the amount of meanings that one can deduce is dependent on one's own capabilities of analyzation, observation, and deduction. A licensed psychiatrist is gonna be able to read more from a simple expression than any average person can. Many people irl can even predict that someone may have undergone some kind of event or is going to do something in the near future from expressions alone. As described previously, what's impressive isn't that Sans can tell if the human has died or killed him, it's that he can do it in multiple layers. Yet, regardless, that's just one aspect of intelligence. Even if Sans is a genius at analyzation and psychology, that doesn't qualify him to be a "Genius" on the wiki overall.

 

[Antvasima]

Given that Sans' analytical ability has proven to be considerably beyond real world human Genius capability, but (if I haven't overlooked any further feats in this area) it was only a single feat and an one with uncertain basis at that, I think that "At least Genius, possibly Extraordinary Genius" seems like a balanced compromise solution.

 

[ZillertheBucko]

"is smiling" We don't really know how Sans ascertains these deductions, just that he does it from expressions. Expressions can translate many varying different meanings, and the amount of meanings that one can deduce is dependent on one's own capabilities of analyzation, observation, and deduction. A licensed psychiatrist is gonna be able to read more from a simple expression than any average person can. Many people irl can even predict that someone may have undergone some kind of event or is going to do something in the near future from expressions alone. As described previously, what's impressive isn't that Sans can tell if the human has died or killed him, it's that he can do it in multiple layers. Yet, regardless, that's just one aspect of intelligence. Even if Sans is a genius at analyzation and psychology, that doesn't qualify him to be a "Genius" on the wiki overall.

We could very easily say he has genius analyzation, considering we already separate “genius in fighting, everyday life, gaming, etc.”

but I’m just gonna say that it’s very obvious that he’s a scientist on the level of Alphys, if not much higher.

 

[ZillertheBucko]

Actually, I’m sort of sure this is too speculative for vsb to have accepted yet, but there’s a number of people who theorize the whole “what do you two think?” line from Gaster includes sans in the mix
Thoughts?

 

[Therefir]

Too vague, I was thinking about two possibly characters other than Sans.

 

[ZillertheBucko]

Technically speaking, Alphys and Sans are the only ones we know who would have the position to be included in experiments like that
Sans more so because he’s got a very direct connection to Gaster
I was thinking we could include in his intelligence something like “implied to have possibly worked with a royal scientist in the past

 

[Phoenks]

@Therefir do you think "at least gifted" is fine?

 

[ZillertheBucko]

Anything less than “at least gifted, most likely genius” is complete bonkerdoodlum

 

[Therefir]

@Therefir do you think "at least gifted" is fine?

While I don't like having Sans that low, I do agree that most of his feats can be accomplished with Gifted intelligence, with only the feat about deducing how many times he has killed Chara being Superhuman intelligence.

But if that's not enough, "At least Gifted" works for now, until we can (maybe) find out what his machine does and how he made it.

 

[Phoenks]

While I don't like having Sans that low, I do agree that most of his feats can be accomplished with Gifted intelligence, with only the feat about deducing how many times he has killed Chara being Superhuman intelligence.

But if that's not enough, "At least Gifted" works for now, until we can (maybe) find out what his machine does and how he made it.

I personally wouldn't say it's enough. It is also quite vague and could easily just be chopped up to being some extrasensory ability of his. And if not, then it's too specific to up his overall intelligence rating, anyway.

Making that genius would mean that mostly anyone with good analytical prediction or information analysis stuff could be argued as genius on the wiki.

 

[ZillertheBucko]

It absolutely cannot be brushed off as being an extrasensory ability, that’s genuine insanity.

It’s made very clear that he does it by reading a facial expression, not reading your mind bruh. The entire point is that he knows about your saves through pure IQ, despite not having any direct way of sensing it at all.

Well, that is unless you want to give sans mind reading, in which case go ahead I guess?

 

[King_Dom470]

"is smiling" We don't really know how Sans ascertains these deductions, just that he does it from expressions. Expressions can translate many varying different meanings, and the amount of meanings that one can deduce is dependent on one's own capabilities of analyzation, observation, and deduction. A licensed psychiatrist is gonna be able to read more from a simple expression than any average person can. Many people irl can even predict that someone may have undergone some kind of event or is going to do something in the near future from expressions alone. As described previously, what's impressive isn't that Sans can tell if the human has died or killed him, it's that he can do it in multiple layers. Yet, regardless, that's just one aspect of intelligence. Even if Sans is a genius at analyzation and psychology, that doesn't qualify him to be a "Genius" on the wiki overall.

Him knowing something bad happened via facial expressions isn’t the impressive part (well it is but not the main thing) the impressive part is him knowing how many times it’s happened via only facial expressions. So either he crazy smart or he has mind reading abilities but I highly doubt that’s the case

 

[Phoenks]

extrasensory =/= literally reading minds

average ziller strawman . . .

 

[ZillertheBucko]

The only alternate explanation for it is that you gave is some vague “it’s an extrasensory thingamabob that allows him to know something that is only known by the other person”
seems like just a half baked way of saying mind reading, but you’re free to elaborate on what specifically you meant, since you’re going to say I misinterpreted you.

 

[Antvasima]

We could very easily say he has genius analyzation, considering we already separate “genius in fighting, everyday life, gaming, etc.”

but I’m just gonna say that it’s very obvious that he’s a scientist on the level of Alphys, if not much higher.

Please elaborate/explain further regarding how advanced Alphys is and how Sans compares to them.

 

[ZillertheBucko]

Please elaborate/explain further regarding how advanced Alphys is and how Sans compares to them.

Her page’s intelligence section shows this, which also mentions W.D. Gaster as well

Extraordinary Genius. Created all 3 of Mettaton's bodies and may have also created Mad Mew Mew's body. W. D. Gaster, who previously held Alphys’s position, invented the CORE, which turns thermal heat into magical electricity and serves as a power plant for the entire Underground, and she reportedly works faster than he did. Hacked into the CORE, even overriding Mettaton's hacking in the process. Successfully rose the dead with Determination. Figured out a highly complicated math problem in 4 seconds flat, correctly guessed the number of flies in a jar with a glance, and perfectly guessed the number of n’s in Mettaton’s name in a situation where the number of n’s was rapidly growing, all in a row. Was able to operate and help Frisk under Mettaton’s nose even when he was standing right next to her. Turned Frisk’s old flip phone into a SOUL-converting, bullet shooting, bomb defusing jet pack with connection to both the Undernet and two pocket dimensions and did so within seconds.

The only characters in the game with real scientific knowledge are Gaster, Alphys, and Sans, the first two being royal scientists
Sans of course is directly connected to Gaster in an unknown way, which is probably a whole rabbit hole, but the most obvious things are that he’s one of the characters named after a font (the other being sans’ brother papyrus and WingDings Gaster) and that one of his attacks is called a Gaster blaster
Sans also knows Alphys, and the line “our reports showed a massive space time anomaly…” implies that he also worked with Alphys, who mentions that she did work on alternate timelines
Also he has his own little lab, so it’s highly likely he’s worked with the royal scientists even though he hasn’t vern a royal scientist himself
During entry 17, Gaster finishes his entry with “what do you two think?” implying two other co-workers present at the experiment
it’s speculative to an extent, but given that nobody else other than sans and Alphys would even be scientists who had any point of contact with Gaster, there’s is a notable likelihood that sans was one of those two people present.
That’s all I can think of right now.

 

[Antvasima]

Well, the information has been left too vague to give Sans any definitive Extraordinary Genius rating, but "At least Genius, possibly Extraordinary Genius" is probably fine.

 

[Phoenks]

Sans also knows Alphys, and the line “our reports showed a massive space time anomaly…” implies that he also worked with Alphys, who mentions that she did work on alternate timelines

I disagree with this. No evidence on this part.

Therefir also mentioned the anti-feat of the machine being broken, which would be weird if Sans had any part in building it.

Seriously, it seems like the whole argument for Extraordinary Genius is based on nothing but presumptions and head-canon.

We don't know what the reports are or come from. We don't know what the 'machine' really is or how it works. We don't know who worked on it... etc...

Well, the information has been left too vague to give Sans any definitive Extraordinary Genius rating, but "At least Genius, possibly Extraordinary Genius" is probably fine.

I'm a bit surprised that you would even favor a possibly rating given he has only 2 extremely vague feats that are genius or above.

Everything else is gifted, which is the far more consistent rating from what I see.

 

[ZillertheBucko]

I disagree with this. No evidence on this part.

It’s process of elimination, the chances are highly likely that Alphys and Sans know eachother because there is literally nobody else it could be that knows about timelines.

Therefir also mentioned the anti-feat of the machine being broken, which would be weird if Sans had any part in building it.

This is irrelevant
1. The machine’s purpose is literally unknown, so why bring it up?
2. You answered your own issue. If sans only had a part in building it, then fixing it on his own isn’t necessarily something he could do
he could also just be too lazy to finish it or something, which is entirely in-character.

 

[The_Yellow_Topaz]

Do you agree with Gifted? If not, what does he has that proves genius?

His superhuman perception based on only his intellect is the only thing that might prove it. He is very knowledgeable on the infrastructure of time and space, apparently more than anyone else in the world, including Alphys, who is smart enough to figure out the nature of SOUL's and extract their essence in physical form.

I'm also fine with Gifted, mind you. But since Sans seems to scale to, or above Alphys in some fields, Genius is fine too.

 

[BasedNecoScaler69]

His superhuman perception based on only his intellect is the only thing that might prove it. He is very knowledgeable on the infrastructure of time and space, apparently more than anyone else in the world, including Alphys, who is smart enough to figure out the nature of SOUL's and extract their essence in physical form.

I'm also fine with Gifted, mind you. But since Sans seems to scale to, or above Alphys in some fields, Genius is fine too.

Alphys is already extraordinary genius btw

 

[The_Yellow_Topaz]

Alphys is already extraordinary genius btw

scale to, or above Alphys in some fields

She's E.G for her robotics and hacking abilities.

 

[RinneItachi]

We could very easily say he has genius analyzation, considering we already separate “genius in fighting, everyday life, gaming, etc.”

but I’m just gonna say that it’s very obvious that he’s a scientist on the level of Alphys, if not much higher.

But to have a Genius classification, don't you need to be a genius in multiple fields, especially in science? Being superhumanly gifted at analyzing psychology to the point of his degree, while certainly making him a genius, might not be considered a Genius on Vs. Battles Wiki.

Again, as I've gone over, this is based on heavy implications of both a direct and narrative format, it is very likely to be true, but it can't reliably be proven to be true, at the end of the day. If it were up to me I'd give him Extraordinary Genius, but I'm looking at it from a Vs. Battles Wiki, and you of all people should know that Vs. Battles Wiki disregards literally anything that isn't some kind of upfront, concrete evidence. If someone can call something speculative in any way, that automatically rules it out as non-relevant evidence. Which is why I wouldn't bother to even try arguing for such a rating, Genius is the highest Vs. Battles Wiki would ever give to Sans until he gets better feats.

ZillertheBucko said:
Actually, I’m sort of sure this is too speculative for vsb to have accepted yet, but there’s a number of people who theorize the whole “what do you two think?” line from Gaster includes sans in the mix
Thoughts?

I love this theory and I could literally go on a multi-hour long discussion straight about it cause I'm very "passionate" about Gaster. And yes Sans was 100% coworker's with Gaster, possibly even familial in relationship. Of the two that Gaster is speaking to, there are several possible candidates of varying likelihood, but Sans is almost definitely one of them and I will accept no other opinion on the matter.

But no it's not going to be relevant to this discussion because it's still technically speculative, even if logical.

ZillertheBucko said:
Anything less than “at least gifted, most likely genius” is complete bonkerdoodlum

"At least Above Average, likely higher" seems like a safe bet

 

[Adem_Warlock69]

Toriel boutta have a higher rating than sans

 

[RinneItachi]

Well, the information has been left too vague to give Sans any definitive Extraordinary Genius rating, but "At least Genius, possibly Extraordinary Genius" is probably fine.

This is what I personally agree with the most. From a more "evidential basis", "At least Gifted, likely Genius" is the most objectively accurate by the wiki's current standards and whatnot. But from a more individual perspective that applies implications and narrative intent, Sans could most certainly be considered "At least Genius, possibly Extraordinary Genius" imo. I'm conflicted because the wiki has always adopted a perspective of "Evidence Only", which has lead to a lot of "controversial" topics in the past relating to what character's can or should be able to do by the wiki's rating. That mindset lead to Toppo beating Jiren in a versus thread. And don't get me started on the never-ending Boros-related discussions happening in the OPM side of the community. On one hand I want Sans to be rated on that level, on the other, it feels like double standards to me and I wouldn't let my bias for Sans as a character get in the way of that. Keep in mind I am literally wearing a shirt with Sans on it while typing this he is in my top 5 favorite characters of all time, and even I'm saying "It feels unfair".

That's just my two cents though.

 

[RinneItachi]

Toriel boutta have a higher rating than sans

More like an equal rating but my god that is funny. Tbf it's not REALLY a stretch. I think that's more so people downplaying how ridiculously smart Toriel is rather than downplaying Sans. Toriel is crazy intelligent and could probably understand all the weird timeline bullshit pretty well if it was introduced to her clearly. Making machines though, that's probably out of her scope.

Bro if a thread made to upgrade Sans ends up getting him downgraded I'm gonna laugh and then cry

 

[ZillertheBucko]

I love this theory and I could literally go on a multi-hour long discussion straight about it cause I'm very "passionate" about Gaster. And yes Sans was 100% coworker's with Gaster, possibly even familial in relationship. Of the two that Gaster is speaking to, there are several possible candidates of varying likelihood, but Sans is almost definitely one of them and I will accept no other opinion on the matter.

(Yes yes yes yes yes!)

But no it's not going to be relevant to this discussion because it's still technically speculative, even if logical.

(No…)
If you think being speculative stops anything then you clearly never scaled FNaF
But either way, the majority is scaling is technically speculation, so perhaps you even have additional arguments to add that would prove Sans’ connection to the royal scientists? As long as there’s evidence then it’s all good.

 

[RinneItachi]

Don't worry. When it's revealed that Sans is actually a Supergenius and Gaster is Omniscient, none of this will matter anymore.

 

[RinneItachi]

If you think being speculative stops anything then you clearly never scaled FNaF
But either way, the majority is scaling is technically speculation, so perhaps you even have additional arguments to add that would prove Sans’ connection to the royal scientists? As long as there’s evidence then it’s all good.

I mean sure, if you want me to go into all of the "Theory-Bait Lore Mystery Shenanigans", I'll just make a list, but I doubt it would really be productive.

Sans:

To start with the obvious.

Sans-"that expression you're wearing...that's the expression of someone who died twice in a row."
Etc.. Nothing to be added here we all know the run down.

Sans-"our reports showed a massive anomaly in the time-space continuum. timelines jumping left and right, stopping and starting. until suddenly, everything ends." "i always thought the anomaly was doing this because they were unhappy. and when they got what they wanted, they would stop all this. and maybe all they needed was...i dunno. some good food, some bad laughs, some nice friends." Same as above.

"look, i gave up trying to go back a long time ago. and getting to the surface doesn't really appeal anymore, either. or maybe that's just a poor excuse for being really lazy? hell if i know. all i know is, seeing what comes next...i can't afford not to care anymore."
Been discussed to hell and back already but like yeah, Sans wanted to go "back" somewhere (or possibly some "when"), and he specifically differentiates this from the surface. Even in the Pacifist Ending he seems to utterly not care about being on the surface. He mentions that he has since given up on trying to go back, however. Meaning obviously he attempted to do something and failed.

Sans-"wait a second. that look on your face while i was talking. you've already heard my spiel, haven't you? i suspected something like this. you're always acting like you know what's going to happen. like you've seen it all before. i kind of have a secret codeword that only i know. so i know if someone tells it to me...they'll have to be a time traveller. crazy, right? anyway, here it is... (whisper) (whisper) i'm counting on you to come back here and tell me that. see you later."
Etc..

Secret Room;
"(There's a photo album inside the drawer. There are photos of Sans with a lot of people you don't recognize. He looks happy.)
Note; The dialogue specifies that the photos are "of Sans", specifying that the other people are "with" him. Meaning that he is the center focus of the photos.
"(You look in the drawer.) (There's some kind of badge.)"
Obviously implying he had a badge to designate him as some kind of scientist.
"(Blueprints.) (You can't read the symbols they're written in...) (...or maybe it's just the hand writing.) (Looks like they relate to some kind of strange machine.)"
On one hand, Wind-Ding's would commonly be described as symbols by the average person, and well, they are. On the other hand, Alphys is explicitly said to have terrible "chicken-scratch" handwriting. It's one of them that helped Sans make the machine, I mean shit they literally gave him the blueprints for it. It's most likely Alphys as the game says "or maybe it's just the hand writing".
"(There's a strange machine behind the curtain.) (it seems to be broken.)"
Obviously referring to the machine in the blueprints. Toby is very careful with choosing his words.
Don't even get me started on the image of 3 people with the words "Don't forget" written on it, which literally confirms that Sans has some significance to Deltarune, if nothing else.

Papyrus-"I ALWAYS JUMP OVER THE GAP INSTEAD OF SOLVING THE PUZZLE. SANS NEVER SOLVES IT EITHER. HE ALWAYS JUST... UM... GETS ACROSS. I THINK HE HAS A SHORTCUT OR SOMETHING."
Btw this is a potentially good Papyrus feat. He jumps over a pretty massive gap of many tens of meters in one bound, and he does it consistently, like it's easy for him, might be worth looking into? I'll make note of it.

Undyne often refers to Sans as just Papyrus' brother, implying that she doesn't really know him despite him being close to Alphys and, well, Papyrus.

Papyrus-"YOU'RE IN MY HOUSE. GOOD CHOICE! THOUGH I GUESS IT'S TECHNICALLY SANS'S HOUSE TOO. BUT I PREFER NOT TO DISCUSS HIS PART OF IT. HIS ROOM IS... IT'S LIKE ANOTHER WORLD! A WORLD WHERE THEY DON'T KNOW HOW TO VACUUM. YOU'RE BEST STAYING AWAY FROM THAT STRANGE PLACE."
No further comment needed.

One of the puzzles in Snowdin is a crossword puzzle with a drawing of the mascot for ICE-E's on it, a character never mentioned in Undertale even once but shown directly in Deltarune, as the mascot of a pizza place literally down the street from Sans' (Deltarune) very house, and Sans probably would love pizza given his personality and taste for junk food.

Undyne-"This is Papyrus's brother's station. I'm always catching him slacking off, or sleeping... But his results are JUST good enough to not fire him. Well, except today. He didn't tell me ANYTHING about you."
Minor but noteworthy.

Papyrus-"HUH? SANS ISN'T PLAYING WITH HIS TELESCOPE? WOWIE!!! MAYBE HE WENT TO WORK!!! WOW!!! AM I ALLOWED TO BE PROUD???"
Alt-"HUH? MY BROTHER? OF COURSE HE HAS A TELESCOPE. SANS LOVES OUTER SPACEY SCI-FI STUFF. HMM? HE NEVER TOLD YOU?? YEAH, SANS NEVER TELLS ANYBODY ANYTHING!"

Papyrus-"A LAB??? MY BROTHER WOULD LOVE THAT! HE LOVES SCIENCE FICTION!! ESPECIALLY WHEN IT'S REAL."
Also, inconsistent as Papyrus didn't know what a laboratory is in another instance and didn't seem to learn what it is, either. Smh Toby plot holes. But anyways ye Sans scientist stuff.

River Person-"Tra la la. Beware the man who came from another world."
In addition to;
"Don't snoop behind people's houses. You might be mistaken for a trash-can."
Probably unintentional but Sans and the word trash are very commonly related to each other, not just by Flowey but by Papyrus as well, and the only house that has a back room is the skeleton house, so River Person is probably talking about that.

"Beware the man who speaks in hands."
Don't need to comment on this everyone and their mother knows the significance of this to another character.

"The Angel is coming." and "Did you ever hear the old song coming from the sea."
Both very likely references to Deltarune.

Sans (Deltarune)-"(Winking) especially considering I've never met you before."

The door used for Sans' room is identical to the doors used as teleportation fast-travel stations, or rather, shortcuts, in Deltarune. Considering that Sans definitely didn't construct the doors used in the Dark World's, a lot could be said on this.

You get the picture. Could list more but long enough already.

Alphys:

Papyrus-"HMMM... A MYSTERIOUS SCIENCE HOUSE."
Sans-"the sign outside says "lab.""
Papyrus-"LAB?"
Sans-"like... laboratory."
Papyrus-"LABRADOR... Y? DOES THAT MEAN THERE ARE DOGS INSIDE?"
Sans-"i mean. (Winks) i wouldn't rule it out."
The fact that Alphys is perfectly fine with Sans very blatantly knowing about the Amalgamates, means she clearly has immense trust in and respect for him.

I forgot to mention this earlier but Alphys LITERALLY says that she has researched alternative timelines and KNOWS they exist. She mentions it during Mettaton's quiz, which obviously ties in with the whole "our reports" thing. Skip to 1:55

Among the multitude of camera's Alphys has, two of them are literally right next to areas that Sans is usually at, including his god damn SENTRY STATION. Implying that she is probably especially concerned for his well being, as it's a stretch to say she's spying on him, let alone that he wouldn't notice and be bothered by it.

Undyne-"Oh man!!! We're gonna be able to watch anime online?!"
Alphys-"Of course, Undyne! What do you think we've been fighting for all along?"
Sans-"yeah, what do you-. whoops."
Alphys-"Jinx! I knew you were gonna make that joke!"
Papyrus-"WAIT. ALPHYS. I DIDN'T KNOW YOU KNEW SANS!"
Alphys (profusely sweating)-"W-Well, I...-"
Sans-"doesn't everybody?"

RinneItachi-"HMMMMMMMMM NO IMPLICATIONS HERE. CLEARLY ALPHYS BEING NERVOUS AT THE MERE MENTION OF THEIR RELATIONSHIP, AND SANS IMMEDIATELY COVERING FOR HER TO DILUTE THE SITUATION, IS IRRELEVANT!!!"

"Papyrus-OH-HO!!! THE PUZZLE THAT DR. ALPHYS MADE! I HAD TO ASK UNDYNE TO ASK HER TO MAKE ONE. I ONLY FOLLOW HER ONLINE... I'M NOT REALLY FRIENDS WITH HER... YET!!!!"
So Alphys is good friends with Sans but doesn't really know Papyrus at all, the most important person to Sans by a mile. Clearly not significant!

So basically Alphys and Sans have a deep and old friendship.

Gaster:

I mean most of this is common knowledge or just not significant to the thread. Probably a skeleton for a multitude of reasons. Related to Sans in some way, objectively speaking. The former Royal Scientist, the creator of the CORE and presumably the True Lab. Was working with two people at the creation of his experiment mentioned in Entry Number Seventeen (not Entry Number "17" keep in mind, that one was made by Alphys wink wink). Those two people could be anyone, but the most likely candidates are Sans and Alphys, or Sans and Papyrus. However, it's a pretty known fact that Papyrus knows literally nothing about the weird science shenanigans going on with his brother, so I would guess that it's Sans and Alphys, who went on to literally take over his position as the Royal Scientist anyways. Keep in mind it's not confirmed that anyone who knew Gaster in the Undertale timeline forgot about him. It's implied that it might be the case, but the idea only came from Goner Kid talking about how the world wouldn't change at all without your presence in it, how, even if you never existed, nothing would really be different in the grand scheme of things, which people obviously think could be Gaster speaking through Monster Kid, or just an alternate version of Monster Kid.

Anyways I'm getting a little sidetracked. Basically Sans MOST LIKELY worked alongside scientists that were 100% Extraordinary Genius, in a group of many scientists, possibly and likely including the Gaster Followers we meet around Hotland's. We 99% know that Sans is a timeline-traveller, more specifically that he came from Deltarune to Undertale and tried to go back (failed), and has an in-depth, complex understanding of the inner-workings of time and space, however at the end of the day he failed to apply that knowledge in the creation of a machine that could send him through timelines again, even with the help of other scientists, including Alphys and/or possibly Gaster, which is sadly an anti-feat against Extraordinary Genius, but it wouldn't rule out a "possibly" rating if things went that way. He is extremely analytical, psychologically tuned, and accurately predictive to a superhuman extent. It is suggested that he has sci-fi level knowledge about complex concepts such as time and space, and was at least close to the level of scientists who would be considered Extraordinary Genius on the wiki, especially Alphys. Sans is aware of the game mechanics and is the only character to abuse them in his fight without hesitation, and he might be aware that the world is a game considering that he very blatantly breaks the 4th wall on numerous occasions, though he is kind of a gag character in some ways which could explain it.

Again, as I said before, going by actual feats and whatnot, "At least Gifted, likely Genius" is the most "objectively accurate" rating, however if we include implications and all that, it's easy to get Sans to "At least Genius, possibly Extraordinary Genius".

 

[RinneItachi]

Everyone going on with their day just to check this thread again and see a gargantuan wall of text nobody asked for (besides Ziller):

 

[King_Dom470]

I mean sure, if you want me to go into all of the "Theory-Bait Lore Mystery Shenanigans", I'll just make a list, but I doubt it would really be productive.

Sans:

To start with the obvious.

Sans-"that expression you're wearing...that's the expression of someone who died twice in a row."
Etc.. Nothing to be added here we all know the run down.

Sans-"our reports showed a massive anomaly in the time-space continuum. timelines jumping left and right, stopping and starting. until suddenly, everything ends." "i always thought the anomaly was doing this because they were unhappy. and when they got what they wanted, they would stop all this. and maybe all they needed was...i dunno. some good food, some bad laughs, some nice friends." Same as above.

"look, i gave up trying to go back a long time ago. and getting to the surface doesn't really appeal anymore, either. or maybe that's just a poor excuse for being really lazy? hell if i know. all i know is, seeing what comes next...i can't afford not to care anymore."
Been discussed to hell and back already but like yeah, Sans wanted to go "back" somewhere (or possibly some "when"), and he specifically differentiates this from the surface. Even in the Pacifist Ending he seems to utterly not care about being on the surface. He mentions that he has since given up on trying to go back, however. Meaning obviously he attempted to do something and failed.

Sans-"wait a second. that look on your face while i was talking. you've already heard my spiel, haven't you? i suspected something like this. you're always acting like you know what's going to happen. like you've seen it all before. i kind of have a secret codeword that only i know. so i know if someone tells it to me...they'll have to be a time traveller. crazy, right? anyway, here it is... (whisper) (whisper) i'm counting on you to come back here and tell me that. see you later."
Etc..

Secret Room;
"(There's a photo album inside the drawer. There are photos of Sans with a lot of people you don't recognize. He looks happy.)
Note; The dialogue specifies that the photos are "of Sans", specifying that the other people are "with" him. Meaning that he is the center focus of the photos.
"(You look in the drawer.) (There's some kind of badge.)"
Obviously implying he had a badge to designate him as some kind of scientist.
"(Blueprints.) (You can't read the symbols they're written in...) (...or maybe it's just the hand writing.) (Looks like they relate to some kind of strange machine.)"
On one hand, Wind-Ding's would commonly be described as symbols by the average person, and well, they are. On the other hand, Alphys is explicitly said to have terrible "chicken-scratch" handwriting. It's one of them that helped Sans make the machine, I mean shit they literally gave him the blueprints for it. It's most likely Alphys as the game says "or maybe it's just the hand writing".
"(There's a strange machine behind the curtain.) (it seems to be broken.)"
Obviously referring to the machine in the blueprints. Toby is very careful with choosing his words.
Don't even get me started on the image of 3 people with the words "Don't forget" written on it, which literally confirms that Sans has some significance to Deltarune, if nothing else.

Papyrus-"I ALWAYS JUMP OVER THE GAP INSTEAD OF SOLVING THE PUZZLE. SANS NEVER SOLVES IT EITHER. HE ALWAYS JUST... UM... GETS ACROSS. I THINK HE HAS A SHORTCUT OR SOMETHING."
Btw this is a potentially good Papyrus feat. He jumps over a pretty massive gap of many tens of meters in one bound, and he does it consistently, like it's easy for him, might be worth looking into? I'll make note of it.

Undyne often refers to Sans as just Papyrus' brother, implying that she doesn't really know him despite him being close to Alphys and, well, Papyrus.

Papyrus-"YOU'RE IN MY HOUSE. GOOD CHOICE! THOUGH I GUESS IT'S TECHNICALLY SANS'S HOUSE TOO. BUT I PREFER NOT TO DISCUSS HIS PART OF IT. HIS ROOM IS... IT'S LIKE ANOTHER WORLD! A WORLD WHERE THEY DON'T KNOW HOW TO VACUUM. YOU'RE BEST STAYING AWAY FROM THAT STRANGE PLACE."
No further comment needed.

One of the puzzles in Snowdin is a crossword puzzle with a drawing of the mascot for ICE-E's on it, a character never mentioned in Undertale even once but shown directly in Deltarune, as the mascot of a pizza place literally down the street from Sans' (Deltarune) very house, and Sans probably would love pizza given his personality and taste for junk food.

Undyne-"This is Papyrus's brother's station. I'm always catching him slacking off, or sleeping... But his results are JUST good enough to not fire him. Well, except today. He didn't tell me ANYTHING about you."
Minor but noteworthy.

Papyrus-"HUH? SANS ISN'T PLAYING WITH HIS TELESCOPE? WOWIE!!! MAYBE HE WENT TO WORK!!! WOW!!! AM I ALLOWED TO BE PROUD???"
Alt-"HUH? MY BROTHER? OF COURSE HE HAS A TELESCOPE. SANS LOVES OUTER SPACEY SCI-FI STUFF. HMM? HE NEVER TOLD YOU?? YEAH, SANS NEVER TELLS ANYBODY ANYTHING!"

Papyrus-"A LAB??? MY BROTHER WOULD LOVE THAT! HE LOVES SCIENCE FICTION!! ESPECIALLY WHEN IT'S REAL."
Also, inconsistent as Papyrus didn't know what a laboratory is in another instance and didn't seem to learn what it is, either. Smh Toby plot holes. But anyways ye Sans scientist stuff.

River Person-"Tra la la. Beware the man who came from another world."
In addition to;
"Don't snoop behind people's houses. You might be mistaken for a trash-can."
Probably unintentional but Sans and the word trash are very commonly related to each other, not just by Flowey but by Papyrus as well, and the only house that has a back room is the skeleton house, so River Person is probably talking about that.

"Beware the man who speaks in hands."
Don't need to comment on this everyone and their mother knows the significance of this to another character.

"The Angel is coming." and "Did you ever hear the old song coming from the sea."
Both very likely references to Deltarune.

Sans (Deltarune)-"(Winking) especially considering I've never met you before."

The door used for Sans' room is identical to the doors used as teleportation fast-travel stations, or rather, shortcuts, in Deltarune. Considering that Sans definitely didn't construct the doors used in the Dark World's, a lot could be said on this.

You get the picture. Could list more but long enough already.

Alphys:

Papyrus-"HMMM... A MYSTERIOUS SCIENCE HOUSE."
Sans-"the sign outside says "lab.""
Papyrus-"LAB?"
Sans-"like... laboratory."
Papyrus-"LABRADOR... Y? DOES THAT MEAN THERE ARE DOGS INSIDE?"
Sans-"i mean. (Winks) i wouldn't rule it out."
The fact that Alphys is perfectly fine with Sans very blatantly knowing about the Amalgamates, means she clearly has immense trust in and respect for him.

I forgot to mention this earlier but Alphys LITERALLY says that she has researched alternative timelines and KNOWS they exist. She mentions it during Mettaton's quiz, which obviously ties in with the whole "our reports" thing. Skip to 1:55

Among the multitude of camera's Alphys has, two of them are literally right next to areas that Sans is usually at, including his god damn SENTRY STATION. Implying that she is probably especially concerned for his well being, as it's a stretch to say she's spying on him, let alone that he wouldn't notice and be bothered by it.

Undyne-"Oh man!!! We're gonna be able to watch anime online?!"
Alphys-"Of course, Undyne! What do you think we've been fighting for all along?"
Sans-"yeah, what do you-. whoops."
Alphys-"Jinx! I knew you were gonna make that joke!"
Papyrus-"WAIT. ALPHYS. I DIDN'T KNOW YOU KNEW SANS!"
Alphys (profusely sweating)-"W-Well, I...-"
Sans-"doesn't everybody?"

RinneItachi-"HMMMMMMMMM NO IMPLICATIONS HERE. CLEARLY ALPHYS BEING NERVOUS AT THE MERE MENTION OF THEIR RELATIONSHIP, AND SANS IMMEDIATELY COVERING FOR HER TO DILUTE THE SITUATION, IS IRRELEVANT!!!"

"Papyrus-OH-HO!!! THE PUZZLE THAT DR. ALPHYS MADE! I HAD TO ASK UNDYNE TO ASK HER TO MAKE ONE. I ONLY FOLLOW HER ONLINE... I'M NOT REALLY FRIENDS WITH HER... YET!!!!"
So Alphys is good friends with Sans but doesn't really know Papyrus at all, the most important person to Sans by a mile. Clearly not significant!

So basically Alphys and Sans have a deep and old friendship.

Gaster:

I mean most of this is common knowledge or just not significant to the thread. Probably a skeleton for a multitude of reasons. Related to Sans in some way, objectively speaking. The former Royal Scientist, the creator of the CORE and presumably the True Lab. Was working with two people at the creation of his experiment mentioned in Entry Number Seventeen (not Entry Number "17" keep in mind, that one was made by Alphys wink wink). Those two people could be anyone, but the most likely candidates are Sans and Alphys, or Sans and Papyrus. However, it's a pretty known fact that Papyrus knows literally nothing about the weird science shenanigans going on with his brother, so I would guess that it's Sans and Alphys, who went on to literally take over his position as the Royal Scientist anyways. Keep in mind it's not confirmed that anyone who knew Gaster in the Undertale timeline forgot about him. It's implied that it might be the case, but the idea only came from Goner Kid talking about how the world wouldn't change at all without your presence in it, how, even if you never existed, nothing would really be different in the grand scheme of things, which people obviously think could be Gaster speaking through Monster Kid, or just an alternate version of Monster Kid.

Anyways I'm getting a little sidetracked. Basically Sans MOST LIKELY worked alongside scientists that were 100% Extraordinary Genius, in a group of many scientists, possibly and likely including the Gaster Followers we meet around Hotland's. We 99% know that Sans is a timeline-traveller, more specifically that he came from Deltarune to Undertale and tried to go back (failed), and has an in-depth, complex understanding of the inner-workings of time and space, however at the end of the day he failed to apply that knowledge in the creation of a machine that could send him through timelines again, even with the help of other scientists, including Alphys and/or possibly Gaster, which is sadly an anti-feat against Extraordinary Genius, but it wouldn't rule out a "possibly" rating if things went that way. He is extremely analytical, psychologically tuned, and accurately predictive to a superhuman extent. It is suggested that he has sci-fi level knowledge about complex concepts such as time and space, and was at least close to the level of scientists who would be considered Extraordinary Genius on the wiki, especially Alphys. Sans is aware of the game mechanics and is the only character to abuse them in his fight without hesitation, and he might be aware that the world is a game considering that he very blatantly breaks the 4th wall on numerous occasions, though he is kind of a gag character in some ways which could explain it.

Again, as I said before, going by actual feats and whatnot, "At least Gifted, likely Genius" is the most "objectively accurate" rating, however if we include implications and all that, it's easy to get Sans to "At least Genius, possibly Extraordinary Genius".

How long did this take

 

[RinneItachi]

How long did this take

Hard to say. I did a lot of things to do today so I was kind of doing it in intervals. I would type a bit of that, do something, type a bit, etc.. In total from when I started it to finishing it probably like 6 hours lol. In terms of time actually spent on it though probably about an hour.