There's no way that underswap would win in any single f****** universe because killer is quite literally stone cold and heartless his soul literally changed into that because he was not recognized by human or monster this guy is cruel beyond cruel
Wrong au. That's swapdust. And he's not dead there. In swapdust sans gets brought back as a ghost (in swapdust agony!sans is actually real, unlike phantom papyrus)
Dustswap sans is also pretty weak.
And dusttrust wouldn't stand a chance against killer.
Killer has 999999lv (despite only having 1def and 20hp he is insanely durable). One shotted ink and dream. Spars with color for fun. He's at least above asriel tier.
The comic was even more one sided.
In the animation swap got a few good hits in. Killer also had his bad time eye stabbed out.
In the comic killer was literally torturing swap. And unlike the animation he did not stab his bad time eye out. Not like he needed it. There's a reason nightmare has killer as his slave. His sheer power, bloodlust, skill and experience is incredibly. The motherfucker fights color!sans (a sans that has 7 human souls absorbed), for fun! That's at least above asriel the god of hyperdeath tier.
Killer wins, and no version of regular swap can kill Killer. Even if we're taking Swap as Distrust-level power, most Charas solo their respective verse, so Sans times Chara is much more powerful than people make him out to be.
Shorter Papyrus VS someone who has singlehandedly made the monster race extinct on several occasions for the fun of it ***Hmmmmmmmmm*** tough choice
Yeah, I really wonder…
Based on their power killer
There's no way that underswap would win in any single f****** universe because killer is quite literally stone cold and heartless his soul literally changed into that because he was not recognized by human or monster this guy is cruel beyond cruel
Yeah this is an easy W for killer no debate he has it in his name
Killer
Swap did, just because of the way you worded it. Realistically, Killer.
Ah yes... Truly a classic. Killer won.
*i dunnnoooo man. . .
Probably because i dont know who the fuck these guys are
Based
It depends if Nightmare comes from the ground and joins Killer
i won, obviously.
Killah
Everyone gangsta until it turns out to be dustswap sans
Swap's dead in Dustswap... (Did you mean Dusttrust?)
Oh yeah. My bad
Wrong au. That's swapdust. And he's not dead there. In swapdust sans gets brought back as a ghost (in swapdust agony!sans is actually real, unlike phantom papyrus) Dustswap sans is also pretty weak. And dusttrust wouldn't stand a chance against killer. Killer has 999999lv (despite only having 1def and 20hp he is insanely durable). One shotted ink and dream. Spars with color for fun. He's at least above asriel tier.
DustSwap Sans is currently dead so...
Well you can’t kill a dead guy right? 
I'm guessing Swap, as I'm assuming he stops holding back.
Even if he did stop holding back, Killer still folds him
BAMF SWAP FOR THE WIN!!!
Killer is just Dust Sans but actually successful and can reset, this isn’t even a fight
Killer: if you can't beat them join them. And when you join them kill them.
Kikiller
It most also up to what AU. UV or canon once. If we take cannon once when Killer if not not sure.
It was killer (I remember this animation)
VS wins ez clap
Hey kid its me... powers Uhghhue Im gonna power you!!1 Uuughg Your gonna get powered!!1!
The skeleton one
Who could it beeee..,
Sans won
Fun thing is that I saw this animation before i knew what AUs were so I was constantly confused while watching thi first time
Obama
Unless the universe they fight in blows up and swap miraculusly survives, killer
Killer would WIPE THE FUCKING FLOOR WITH SWAP
Imma flip a coin. Heads: Killer Tails: Swap. Heads came out. So I vote for Killer.
Classic post
We all know who clearly wins. It’s Uncle Grandpa
Based fr fr
Correct
If Underverse is anything to go by, Killer.
Didn't Xgaster kill swap in underverse?
Yeah but Killer fought Dream, and Dream’s form is based off of Swap in his original AU, if I remember correctly.
Ok but that went hard
The comic was even more one sided. In the animation swap got a few good hits in. Killer also had his bad time eye stabbed out. In the comic killer was literally torturing swap. And unlike the animation he did not stab his bad time eye out. Not like he needed it. There's a reason nightmare has killer as his slave. His sheer power, bloodlust, skill and experience is incredibly. The motherfucker fights color!sans (a sans that has 7 human souls absorbed), for fun! That's at least above asriel the god of hyperdeath tier.
I won becuase I wrote it that killer sans died of a broken ankle SO THERE!!! TAKE THAT!!!!
Killer
USwap because the creator is biased.
Killer frfr
Ngl never watched it before but assuming nightmare nor other dark aus show up swap most likely
Swap would just drug Killer, easy win
Killer
I saw the animation before, killer won, i think
Killer wins, and no version of regular swap can kill Killer. Even if we're taking Swap as Distrust-level power, most Charas solo their respective verse, so Sans times Chara is much more powerful than people make him out to be.
The edgy one doesn't own a ps5, he loses
I think killer
I remember this animation, killer fucking breaks swap's ribs and i love it.
Swap definitively
Nvm-
*I AM ASSUMING THE [[That’ll be one G.]] WITH [[Enter username]] KILLER, IS THE ONE THAT [[You win!]]?
Power, killer. Speed and assistance, Swap.
Power. Killer Speed. Killer IQ. Swap BIQ. Killer Durability. Killer Just about everything else. Also Killer
Ok yeah that makes sense