This is Glitchtale, but the beginning is different. Instead of Sans being his usual self, he turns into himself from Dusttale, where he killed all of the monsters and gained some of their magic. How will this affect the history of this fusion of 2 t...
Dust and the others look at the one know as XGaster, as Dust than gripped onto his scythe and glared. He looks up at the one the calls himself XGaster. He does not know how strong XGaster is, nor does he wish to know, as all he knows is that he is here to cause even more trouble to Team Hope then ever before. He stares up at XGaster, as he then sees that XGaster is staring back, both of his Cross-Shaped Eyes present, as he then spoke out.
"I must say...for a version of Dust, you are very unique, not as unique as the others, for they are more then you, yet, they are unique in their own ways."
Dust than narrowed his eyes, as XGaster continues ti stare at Dust with a sinister smirk on crooked mouth, as he then spoke out.
"If it were up to me, I would have taken you to Team Void myself, so that I can experiment on how you are able to take the powers of others after killing then, how you are able to absorb their power. And yet...Nightmare, he wants me to not interfere with you, for he has plans of his own for you. But that does not mean that I cannot give you scars that will result on the perfect world that I will make."
He then looks down at the Murder Time Trio, as he then spoke out.
"Perhaps I can make use of their souls."
He than extended his hand and summoned a button called Overwrite, as he then pressed it, and the moment that happened, Insanity, Killer, and Horror had frozen still, as their forms crumbled, leaving only their souls intact, and Dust as the only one that is still alive. Then, using his powers, he made Dust frozen, as the sound moved closer and closer to him, as he then spoke out.
"Let's see if my power can make a new fusion that I alone can make."
He then pressed the Overwrite button, as a purine shine erupted from Murder, and this made everyone close their eyes, as the shine of the bright light erupted from the 4 Sanses, and XGaster spoke out to them.
"Enjoy your new playmate. As for me...Betty...it is time to come back to HQ."
He then grabbed Betty by the shoulder, as he and Betty teleported out from the AU, and the shine died down. When Dust and the others looked back to see what has happened to the Sanses, they are completely shocked.
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XGaster has used the power of Overwrite to fuse Murder, Killer, Horror, and Insanity, all 4 of them together, into making a Sans that is now known as Satsujinki Sans. This fusion is very powerful, so much that he is even stronger than Dust Sans himself, who is at LV 20. And even more of a disadvantage for them, as that the Bad Time Trio and Last Breath Sans, they are all too tired to fight even further. Dust snarled, as he is clearly angry at the fact that they are now at a serious disadvantage, due to the fact that this is a trick that they had never seen before happening, and this is now going to put a huge dent into their efforts to try and save what remains of the people of MafiaTale.