Undertale reacts to Sans AU themes 

So many aus have insane lore that deserve recognition the fact that undertale “AUs” haven’t died yet is proof of it

Actually error doesnt destroy aus for fun he actually does that to keep balance in the multiverse. If theres to many universes the multiverse would collapse and another one is he does is so not many genocide route can be done

Dark fact: Fresh is not....fresh, it's the parasite as when he flips his glasses up the glasses turn from YO-LO to HELP ME. This is the skeleton or the Sans within Fresh screaming for someone to come and help him. This is pretty dark, as when you realize that Sans AUs are quite annoyed of him, yet they don't know that behind that annoying parasite, a Sans is screaming for help.

4:09 out of all the sans i think the coolest is either dust or killer because dusts backstory is purely tragic as he was driven insane by endless murder. However killer was reborn as pretty much a lord of hatrid attacking almost anyone on sight.

also a quick fact about error, the only Alternate Universe error won't destroy without any real reasons other than to "get rid of them" or "to entertain himself" is outertale, because error think that this AU was whole and complete, not an "anomaly"

Horror sans is actually also an alternate timeline cause his story starts after a neutral run

Fun fact: fresh is a parasite and not a sans,which is why fresh soul is in his eye

Infected sans destroyed alphatale . A fact about him when he eats apart of anyone he gets a small portion of their abilities.

3:06 Funny how I just actually made the video about it, Echotale and Underpatch Sans having the same design really makes things confusing

A fact:Error is Geno that after a long time in the anti void became Error and lost his memories.

basically for those who doesnt knows, killer doesnt has hate, the black stuff coming from his eyes is excess of determination, he has been seen without that black stuff from his eyes wich lets him look like a normal and peacefull sans but he isnt, now about infected... infected is basically from alphatale, he has destroyed alphatale and killed alpha, error 404's brother.

fun fact about fresh: fresh can sneak into the anti void without error even noticing a bit, and, he often carries explosive furries around, and when he is serious, he is more powerful than error, tho he has nearly never been that serious before

What happened with insanity is he one day was put into the void and gaster injected something into sans which made him completely insane but also gave him determination as for his papyrus his skull is still alive and is stuck watching his sans killing people (which papyrus like most people doesn't want to see that) while feeling incredible amounts of pain from the bone going through his skull which together his hurting this papyrus mentally and physically but no matter what he does he can't end his own suffering

I really like this video. I also like how you made frisk and Chara realize that because of them resetting and doing genocide most of those bad Sans’s like dust or killer or a sans that ended up like geno happened because of them and their actions. Not many videos do that so thank you bro. 10/10.

Omnipotent: I have no card face, but there is no me qwq error404：Oh, it's just that there is no tune. After a few okay, brother, you will have the same tune Omnipotent：QwQ error404：Hey, it's okay to go to other timelines, go shopping, have a cup of tea or something? Omnipotent：But... well

"I don't know the full story about this story" ying yang Ray 2021

Infected is actually the one who destroyed 404‘s AU

4:25 I can help fill in the details with insanity! Insanity was a normal sans that got possessed by a experiment in the true lab and went on an aggressive murder spree, insanity keeps Papyrus's head in his hand at all times as a trophy but I have reason to believe that the head is still alive since (and this is something we all haven't noticed) that papyrus can live without his body as long as his soul is safe... So basically Insanity is a mindless killing machine that carries his brother's head everywhere he goes.

There is a second part to this sans AUs video. I think it would be cool if they reacted to that. Then they can see omnipotent :)))))

Fatal Error is a alternative timeliness from aftertale/Geno basically error when he tried to kill him the au glitched and fatal error was born

Insanitysans is and will always be my favorite bc of his lore. He was very furious as he murdered all of the underground and tried to take it to the next level by torturing everyone until he was filled with insanity as he lost his mind in the act. He then would consume the victims in a certain way as he gsins their LOVE and soul capabilities. He built up enough to murder his frisk and chara for good. (Even though the mirrored version he dies which confuses me)

8:07 Everytime i hear alphas and King multiverse i get the chills

Gaster sans :*appear* Betty, frisk, chara:*blush*

Ray stats:good content Intro:Shanghailovania

The intro theme is great I subscribe cuz the theme is good

Actually, Insanity Sans is insane because of some experiments that were done on him by gaster

Fatal Error is basically the other side of Geno or perhaps you can say his twin from another multi-verse

8:38 kinda ironic considering that king multivevse is puppeteered by Error 404

Geno is immortal as long as he’s in the save screen

4:23 I am not sure about this Sans either, but I believe he was injected with DT, which worked but came with a Side Effet:Him becoming insane 7:18 Fatal Error is the result of Error attempting to kill Geno, but because Geno cannot die, he turned into Fatal Error As for Fatal Crash, I have 0 clue about that, never heard of it, but I'm assuming it's a Fanon ending to Fatal Error where he kills Error, this is just my theory though 8:18 Infected is the First Destroyer, he killed Alpha and 404

I like how you explained almost every AU. Also Undertale reacts to sans au themes but wait why is Betty there and where is sans?

Insanity actually didn‘t snap. He got infected by something from Gaster‘s lab

Since you dont know much about infected sans i'll give you some info i know Infected sans was the one that destroyed alphatale

From what I’m aware Infected was the first destroyer and not as strong but just strong enough to clash error 404 and is the one responsible for the death of the first au AKA alpha and 404,s home

Insanity Sans Backstory (Taken From Fandom Wiki and EXTREMELY Late): Gaster infects Sans with one of his DT experiments. Instead of altering his body, the determination alters his mind, removing crucial parts of it, namely Happiness, Confusion, Common Sense, and Empathy. Upon meeting Frisk (Was originally Chara but was later retconed), Sans discovers the power of RESET, the ability to commit murder and get away with it. upon the realisation of this power, he somehow gains the ability to Reset and kills everyone in his timeline over and over, enjoying every moment, apparently becoming unstoppable, with killing attempts from Frisk and others only leaving cracks in his skull, likely not doing much damage to his overall HP. Trivia: The Papyrus Head is Alive Which Is The Reason Why It Hasn't Dusted

Bro just can I love how u made gaster!!!

Canon Ink Fact: Ink does not create the AUs, just protects them. Canon Killer Fact: Killer can speak fluent Arabic Canon Error Fact: Error doesn’t know Ink exists Canon Error404 Fact: This mafaka is still grieving over the loss of his AU Canon Dream Fact: Dream would die if he ate the Black Apple Canon Nightmare Fact: Nightmare is Aromantic Asexual Canon Ink Fact 2: Ink uses He/They pronouns, making him a DemiBoy

just came back to the undertale fandom for a reason. :)

Insanity story in one line : PILLS

Reminder infected sans is also known as “the first destroyer” that’s what I heard

:O i finally found the old channel i was watching since 2020!!!!

Try 0.75 speed at epic sans theme it's like epic dust

I know this was a year ago but A little alphatale Knowledge there's four brother's there's William aka Error 404 there's Adam aka alpha then there's Ares aka omnipotent then Jacob aka infected then there's a new brother that's a papyrus named Delios. There's a little knowledge bomb for you about alphatale

Let’s be honest here, if epic went all out there would be no AU left.

Epic!Sans would definitely let Cross!Sans steal code from his AU since they are friends

Fun fact about error 404: one day while him and his brother alpha were doing thier routines another destroyer "infected sans" entered thier world he is another destroyer and was the one to kill error 404's brother now error 404 seeks to not only bring his brother back but also get revenge against infected Also if you pay attention to some fan made undertale au comics infected shows up alot he legit is the monster haunting the multiverse Infected is alot like horror sans but way more hostile and much more powerful he carries a hatchet and has a hole in his head but as I said he makes attacks from horror seem ticklish can even rival biengs like error and ink

When you now find out Is homicide sans name is actually Nemesis

So cool

Story Of Insanity Sans: Gaster Made An Experiment And Injected Something Into His Soul, Then After That Sans Became Insane, Caused To Kill Every Monster In The Underground, Including Gaster And Papyrus

And one more thing I just noticed something if Sans has Alter version of himself then Sans can be Dust,Killer,Horror,Insanity,Geno and Error I don't know if this confirmed theory

Actually i think insanity sans passed was that he just had some determination in his body and he got to crazy from it.

all I found is his back story so here it is homicide sans story: Murder Sans takes the role of one of the protagonist villains and possibly the story's central protagonist. He was initially forced by Nightmare to accept his deal and join the "Villain Sans Squad" or die. After a long battle, Nightmare wins by using Phantom! Papyrus to make Murder surrender and join the gang. I think this is it I guess and this: Backstory. Of course, Sans tried to stop the genocide by all means. Mercy ever laughed at. Judgment, of no avail. Fight, never to be won. Nothing helps

This is a great video but if tour using the original killer he actually made a deal with Chara where if he killed everyone she wouldn't kill him and she gave him a different type of soul

No one : The video on a scary sans: DARK

Insanity sans story - gaster came up with an antidote for what?, idk but he tries it on sans and sans goes mad and kills everyone that is why his name is insanity sans

Fun fact error sans is just an alternate timeline of geno who is an alternate timeline of sans error was geno but entered the antivoid somehow and lost his memory in the process

I have more information about insanity sans he basically has a collection of heads And, he takes off monster heads because he knows that it won’t kill them just make them suffer And idk why it says " little ugly " So your welcome

the origin of Insanity!Sans was, he got obsessed with the Determination Experiment, so he ended up killing everyone

ah yes finally the best song every INSANITY REMIX MEGALOVANIA

Love how u say undertale when u have a glitchtale character

No Sans snapping is Dust Insanity if i recall is basically a Sans that is FORCEFULLY injected with Determination from Gaster .... atleast that's what i remember reading

Fun fact about Epic!Sans: Epic!Sans is a fusion of a OG Sans and Gaster

Actually epic!sans is gaster sans and he friends with cross.dream.ink. But you all know he is meme lords😁.He ever say bruh....That so weird. Do you see behind of his back.It is black and white heart.white is meme lord and black is i donot know what to say 😑 it like gaster.You know what gaster it?you understand.

Well, i can explain the whole history of this four: Infected and Omni are brothers, the same with Alpha and 404, but their relation ship Omni Infected and Alpha and 404 is step brothers, Infected named Jacob, get tortured and then he destroy Alphatale where everyone live, he killed Alpha, (I don't know what with Omni) Then 404 want to kill him, he dosn't know this is Jacob, he gets to the void and then he just go insane and gets a lot of power, he tried to kill Infected but he failed, 404 destroy the rest of Alphatale because he had too much power, this is how this sad part of history ends, also Omni name is Ares, Alpha name is Adam and 404 name is William

Wait about Insanity sans Story- About the story it basically is related to killer sans and dust sans thogether, but in a different way, where he "Litirally" killed his own au, including papyrus, and insanity gained infinity stamina due to (idk cuz no reason why he got inf stamina) and also insanity is like a possession of evil (Like Chara) also its frisk and chara are nothing rn, hes just alone with his brother's skull holding it Thats the story of insanity sans :)

geno is stuck in the menu of undertale and got somehow found a way to the void and turned into error

dream and night/nightmare isn't exactly a "sans", its just the "tREe MOm" taking reference from swap!sans to create dream and night

SANSESSSSSSSS READY FOR A BAD TOM?!

You:5:20 this is dream Me: the speedrunner?

Funfact: Epic! Sans is a scientist in his au, also like what other people have said, Fresh is the parasite and not sans

Any type of RU-vidr that animated by "revolver animation" like (madness combat Vs corruption) Friday night funkin in 3 videos?

7:30 Ok,for Fatal Crash,he's became like that if he killed Error successfully

wtf going on your intro is that SHANGHAIVAINA ?:D? oh epik tokyovaina WAIT NO OMNIPOTENT SANS >:d

Basically before gaster fell in the core he injected something in sans making him kill everybody in the underground insanity sans past)

Hey that realy good

0:44 Papyrus:It’s sans! Me: He’S MAkInG A gUN FinGer

FINNNNAAAAALLYYYY SOMEONE THAT PUT TRUE THEMES

Insanity Sans is Dirtytale,he is another timeline of undertale,he was with gaster I assume,but sans got injected with small determination then started getting insane he got cracks from the people he attacks,he even killed papyrus,now holds his head as a megalomaniac…. Fatal Error is Actually Aftertale but something kind of happened to him if you look notice how he has a scarf,slash, determination,and white cloth.

2:32, they became drugs. I wheezed so f*cking hard at this

I kinda want them react to memes, like Error memes to start it off.

2:28 monsters become weed?? 💀

last breath sans is the most powerful sans because gaster is sharing his power with sans and he binds the original game’s reality together. lb also can’t die because of gaster’s immense power accumulated. since he controls the original world, he is what inspired the aus even if he is an au. also btw bete noire is also an au of glitchtale and is not an original undertale character. error has tried to destoy normal undertale’s gaster but has never succeeded, in which the power of an undying sans more determined than chara and frisk to kill them mixed with the power of a eternal being that ripples through the strings of reality. gaster also traverses au’s so last breath could too. and what you get is a sans that if “killed” will just decompose a little but will grow more in determination and power. last breath could dominate the multiverse of sans if you really go in depth.

I'll help ta whith insanity sans. Basically insanity sans was injected by his father's experiment which made him realise MORE about the saves so he went on a murdering rampage reseting each time

2:28 i fell off my bed after reading the end

*when markiplier play outertale* markiplier: space is so COOOOOOL

FiRst!11!1!!1!11!11!!!!

All of them are good sound

Infected travels through multiverses and if he wants to destroy he will do so

Fact: Error 404 created King of Multiverse so he can kill him when he wants

Ray thanx for presentation to cross

We go from erorr 404s theme to alpha nice calm theme

Ya know, I used to love watching these.

If you added six bones then it will be better but I will give it a 8/10 for this one

Fun fact about Epic!Sans: His Big Gaster Blaster is enough to cause a third of a nuke

If you didn’t know, error 404, alpha, omnipotent, and infected are all brothers

Insanity tale is where sans was desperate enough to take a determination shot and ended up going insane

Nice video

There can only be one memelord

The Error is the alternate timeline of Classic too

Infected is basically an OP version of horror.