#outboundtale

Toriel - Spectertale by Crayonqueen

Napstablook - Underswap by popcornpr1nce

Sans - Blueberror by Crayonqueen

Papyrus - Dancetale by Teandstars/Sterrenschijnsel

Monster Kid - Fellswap Gold by Jotman

Undyne and Alphys- Outertale by Mimi Pippinski

Mettaton - Oceantale by Forte

Asgore - Undercross by Jotman

Asriel - Swapfell Red by Ziznine

Chara - Storyshift by VoltraTheSparking

Frisk - Core Frisk by DokuDoki

Sans (Classic and Swap Form)

Papyrus (Classic and Swap Form)

PERSONALITIES

In general, the bros are pretty goofy, silly, mischief makers. They love both puns from the Papyrus slash Underswap Sans mode leaning more on them and both love practical jokes from their Sans slash Underswap Papyrus modes leaning more on those.

They do kind of have a nihilistic view on things knowing that everything that makes up their multiverse is made of a bunch of greater humans that could just decide to erase any of the universes they created. But at the same time, they realise that that doesn’t really matter. What could they do to stop them anyway? They’re made from duplicates of code that’s torn off from universe codes, so the original universes being deleted won’t delete them. (Wait till they realise they were created too but anyway) But they don’t use this new ‘Nothing matters! No one can stop us!!! *blowhorn*’ view to cause bad chaos, just chaotic good to neutral chaos. So when they do eventually interact with the Aus, they’re mostly just goofing around with the characters and lowkey fangirling since they HAD been watching the Aus from a distance from a while so that kind of made them feel parasocially connected to them. But also won’t interfere with actually important events since that’s not their place to do so.

They also experience slight memory issues. Not quite amnesia, just sometimes having random snippets of memories from a random Sanses and Papyri. Like, imagine Outbound Sans talking to Underfell Papyrus after having gone to Underfell a few times with his Papyrus and joking about an event then Underfell Papyrus being confused as hell why this Sans knows about something that happened in private with him and Underfell Sans and having Outbound Papyrus being like, “... BROTHER, I BELIEVE THAT WAS ONE OF THOSE... DEJAVU MEMORIES.”

Sans just blinks blankly for a moment before laughing it off, “... OH! MY BAD! FORGET I SAID THAT, LMAO.” and Underfell Papyrus is just confused.

SANS

Older brother, a bit of a terror of an older brother that loves messing with his younger brother. Lovingly.

Little mischief gremlin, does stuff randomly cause funny, also likes sarcasm

More observant than his silliness let’s on

Laughs slash appreciates at any joke Papyrus does, regardless of if he’s in Swapped or Classic mode cause he finds anything he’s bro does as endearing as a proud big bro

Slightly more unstable than Papyrus since there’s more Aus of Sans exist, especially negative ones. Has moment where the abundance of bad Sans AU codes in him make him either slump into episodes of deep depression or irritation to outright rage. Has learned to block out the worst effects of these codes but can't stop it entirely and hates it

SWAPPED exclusive trait: Hyper little energy ball, whizzes around a lot (Because people kept misinterpreting Blueberry as Canon Swap Sans, blueberry does influence him too)

CLASSIC exclusive traits: Sleepy narcoleptic, though half the time it’s because he’s pretending as a prank. Also drinks condiments because of how prevalent this headcanon is, half because he likes seeing people uncomfortable for funsies like OG Sans does, half because he likes it like everyone headcanons Sans does.

PAPYRUS

Younger brother that is so done with his older brothers antics but still puts up with it cause even he can admit it’s funny sometimes

More friendly and tenderhearted but can be pretty hot headed

Typical younger brother attitude, so it generally more immature and slightly more willing to give the benefit of the doubt to others, not out of naivety but optimism, than Sans is

Don’t let him acting annoyed with his older bro’s antics fool you, he can be just as much of a silly billy as Sans can be

Unlike Sans, he doesn’t experience irritation or depressive moments like he does, since Papyrus in Aus is very rarely depicted as... I guess antagonistically is the best word to use as Sanses are. That doesn’t mean he doesn’t feel some levels of depression ever

Autism haver, tends to fidget, a little bit socially awkward but optimistically and confidently pushes his way through it. Randomly becomes hyper fixated on different things.

SWAPPED exclusive traits: smokes special magic sticks, doesn’t actually do anything to him except make him look cool. Influence from the many swap Papyruses version makes him feel the urge to but has no real need for the effect smoking would actually cause.

CLASSIC exclusive traits: Go getter, pretty cocky even compared to Swapped Sans since he’s been pretty hyped up by Sans

How they switch? Usually it’s just a random thing that happens with a slight glitch but they can make it happen manually, usually if they just feel like relaxing (SwapPapi and UTSans) or go exploring (UTPapi and SwapSans)

BROTHER DYNAMICS

OG Papyrus x OG Sans

Pretty similar to original game

Swap Papyrus x Swap Sans

Similar to canon Swap

Sans is more protective of Papyrus than Papyrus is of Sans, unlike how many people seem to think otherwise, but Papyrus is still pretty protective of his bro

OG Papyrus x Swap Sans

THE ABSOLUTE GREATEST MOST MARVELOUS BROS EVER (as claimed by them

Energetic, always on the go and doing things

Surprisingly, Sans is more hyper and energetic than Papyrus so Papyrus has to keep up with him more than Sans has to keep up with him

Swap Papyrus x OG Sans

They just chillin’

They tend to avoid versions of themselves that have more code influence over them (aka older, popular Sanses and Papyri) since they tend to see them a little more like celebrities of the Multiverse than other thems.

Think of them having more parasocial relationships with more popular/older AU Sanses and Papyri, knowing (lots of bits of) their memories and experiences and knowing those versions of them have zero connection to them in return.

And being more willing to be buddies with newer/less known Sanses and Papyri since they feel less connected to them since there is less code of them floating around that could have made up the Outbound bros' code . I don't know how to explain it fully argh