The wolf
The Wolf of the Wiki has found a noncanon character. Move their page to the correct wiki or see them be devoured.

Error!Sans is an AU destroyer created by Tumblr user, Lover of Piggies. In this AU, he is bent on destroying all AUs and things he considers 'glitches' or 'mistakes' in the multiverse (Where all Universes reside). He uses blue strings to tie up and shatter souls, and if the strings go inside a victim, he will be able to transfer his soul into the victim, making his body turn to nothing but turning the victim into him, controlling them to do whatever he likes and leaving the victim helpless. He can jump from one universe to another, as well as having several other glitchy powers/quirks.

This AU connects to many others, so it's best to get to know some other AUs before you jump into this one.

Error Sans basically is an AU hunter, seeking and destroying AUs left and right, except for the ones he likes such as Outertale. How he does it, is he keeps Frisk and Flowey under guard so they are unable to reset (he basically imprisons them), then proceeds to go on a killing spree.

Error Sans was created as a result of a player messing with the game files too much, resulting in him glitching out. He found himself trapped in the white void between game files (which CORE Frisk cannot see). He went insane in there until he found out how to manipulate the game's code to open portals to various AUs.


Frisk, feeling terrible after a genocide/no mercy run, accepts Sans’ mercy and agrees not to come back if they were any friend of his (just as in-game if you accept Sans’ mercy), except they end up resetting the timeline and coming back anyway. While leaving from the ruins, they hear the familiar sounds of Sans but soon discover instead Sans has become an error in a code. Sans is now a somewhat demented and psychotic character who is determined to find any and all anomalies within various timelines and destroy them. His character is one of confusion and somewhat hypocritical behavior since he himself is an anomaly, yet he views himself as the cleanser of timelines instead, just like SCP-049. Due to the level of insanity he has, his real motives and behaviors are still a mystery. He has been stated to be a complete mystery due to the erratic and unpredictable behaviors he has. He keeps puppet versions of his other selves that he talks to, calling standard Sans “Sans classic” and naming the other ones by numbers. Underfell is “Sans abomination number 13″. He refuses to discuss Papyrus. At all. Despite admitting he is a glitch/anomaly, he is different since he’s the only one doing something about it. He really wants to hunt down CORE!Frisk


Error Sans is essentially a puppet master, his blue strings are capable of manipulating a person's soul if contact is made. He can also use his blue strings as grappling hooks for extra movement or to stay airborne during a battle. Error also has Gaster Blasters which moves twice as fast, bigger, and is has the same color scheme as Error. He also possess the ability to use his blue strings to latch onto and control individual's souls like puppets. His bones are colored from red to black and are stronger than Sans Classic. He can also teleport to any Universe by manipulating code.


Error has haphephobia (the fear of being touched), and is therefore very hesitant to get physically close to anyone.

At random intervals he can glitch up, filling his eye sockets with errors, giving him a major disadvantage if he's in battle. If Error had no strings, he would be a very easy problem to fix.

Error also cannot see things far away clearly, as he uses glasses a few times in comics to show this. The glasses are kept in the pockets of his hoodie. He also knows how to knit, sort of.

He is also supposedly weak to water, but no one knows for sure yet.




Anti is an mortal enemy of Error sans. Anti, cousin of ink sans team up to fight Error sans. anti deletes Error sans by typing commands on his keyboard. Error and Anti might have some love,hate relationship.

Ultra!Tale Sans

Ultra!tale sans or Delta!Sans is the brother of anti and fights error, Virus!Sans. Made from Bravery, Delta!Sans Has no fear of Error!Sans.

Blueberry Sans

They get along, somehow. Its unclear why Error gets along with Blueberry so well, probably because he's the first "Friend" Error has had in a long time.


Ink is the protector of AUs while Error himself is the destroyer. Error hates Ink!Sans with all of his might, but it is unclear why he sometimes hesitates when fighting them, people speculate that Error might have a small Soft Spot for Ink.

Some fans ship these two, they have an accidental "kid" named Paperjam.


Started all of this. People dont know why Error hates Her so much, most people think its because of the AUs, but there might also be a deeper meaning to his Never-Ending Rage for her.

Fresh Sans

Error is completely freaked out by Fresh Sans, immediately Gaster Blasting upon sight.

However, Error is sometimes shipped with Fresh and people have started an ErrorFresh army because of how cute the ship is. However, in a non-canon post, Error gaster-blastered Fresh, who survived.


Errortale bros by equilibrik-da0325c

Error!Sans believes he is the only Error in the multiverse, but there is his brother who also turned out to be one that he does NOT know of. He refuses to discuss Papyrus. At all. However, it may say that he was hidden among the ‘in-between files’ of the multiverses.

Rumour has it that Error!Sans may NOT be alone as there are many Errortale characters that live inside the Anti-Void, such as Error!Undyne (who may not exist, but has made a quick appearance in the comic at one point).


After the first timeline was destroyed, Frisk had turned into an Error!Frisk, and somewhat, became Error's student. Error Sans is unawares that the human is "Frisk." Error has also show to have taken a liking towards her and has a Soft spot for her.

They are also shipped, but not as much.


While Gaster is all around stronger than Error Sans, Error can beat Gaster in battle when at full power. However, Gaster claims that he is Error's father. This is not canon, however, and should be moved accordingly.


Error in 6-tale is good friends with Spectron, as they both destroy AU's. But when Spectron left the group, Error began to hate his guts.


The fusion between After!Tale Sans and Himself, its also the form he takes when he's near death (if that ever happens). It is said that this form is even STRONGER than his base form and has the power to match Error!Gaster and can even hold his ground against Solartale Sans.


In the 6-tale universe, Error is one of Terracus' henchmen. He hates Terracus, but is too terrified of him to dare disobey or stand up to him. He also hates how his goal is to create yet another anomaly (The AU 6-tale) but is forced to help him.


The "Accidental" Son/Daughter of Himself and Ink Sans. They are strong willed and determined just like Error and Creative and Mostly positive like Ink. No one knows where they came from but they just appeared and have since then made a few appearances.

Blue Screen



He is friends with him and helps him destroy Aus and kill AU Charcters.


He met Warfare!Sans and battled him. But due to WF!Sans's skills at mobility, He was forced to retreat. But swore to come back and reek chaos and destruction to that universe.

Annoying Dog
This information is based on alternate scenes or materials, and is not considered canon within the overall plot of the AU series.


After multiple times of trying to get into the Omega Timeline, he offered S.T a job to hack him a way into the Omega Timeline. But, S.T refused and Error tried to kill him.

Solartale Sans

Solartale Sans and Error have always had negative relations. Error attempted to destroy Solartale very quickly, at the point where only Solartale Sans existed. However, unaware of Solartale's power, he retreated into the Anti-Void in 5 minutes. Since then, Error has been hellbent on destroying Solartale. However, he is still fearful of Solartale Sans' power, and thus reluctant to attack again.


Create and Error don't get along well. Because Create is a creator and Error is a destroyer, they're constantly at each other's throat.






One of the aus lives he destroyed though he is at an infinite hp, lv, and power being able to set it and is stronger than him in all ways.


AlphaTale was the first AU that Error Destroyed and now questions if it's really destroyed.


Error404 is like error!sans's ancestor, he's the only one that knows about him and is also the only one that needs to know about him.


Error had no idea who the hell is that thing is, when he go to the unknown random dimension. Who knows? Who the hell knows anyway? The thing is that's probably a Dark Error Sans.

Rejected Creation

Error thinks that Rejected Creation was a useless machine that only destroyed souls in their own AU. Error usually tries to destroy this robot's code at the end of a route in Soultale.


Annoying Dog
This information is based on alternate scenes or materials, and is not considered canon within the overall plot of the AU series.

Error once destroyed a timeline called Alphatale which was the first ever version of Undertale and its AU's ever, but unknown to this day everyone that has ever existed in the Undertale AU's never heard of Alphatale ever.

Error mostly created a dark version of Undertale from the resetted files called HappyTale which isn't really happy at all. Error destroyed most of Happytale until CORE!Frisk (CORE!Frisk used a file traveler to travel the files only able to be used once), he completely forgot about HappyTale. Well, that is until he remember from another game reset. Now, HappyTale is a unknown universe no one except Rhosaith has heard of.


  • Error is myopic (nearsighted).
  • He also likes to crochet. And is known to Knit from time to time.
  • Error is shipped with Fresh and Ink but nothing is canon.
  • Error has Haphephobia, the fear of being touched.
  • Error also has pixlexia (A term coined by gamers, where the coding is messed up so all the controls are inverted. Left is right, up is down and so on.
  • Error and Ink combined makes an "accidental" child named Paperjam or PJ.
  • Ink and Error have a rivalry going on to defend/destory all AU's, but have teamed up only ONCE before.


Ad blocker interference detected!

Wikia is a free-to-use site that makes money from advertising. We have a modified experience for viewers using ad blockers

Wikia is not accessible if you’ve made further modifications. Remove the custom ad blocker rule(s) and the page will load as expected.