Undertale & Deltarune Oneshots

☆Save Them- Dadster vs. Handplates Gaster

Plot: Gaster accidentally stumbles into a different universe, one where he meets a version of himself that is completely different. Upon finding the children that the other Gaster calls experiments, Dadster is determined to free them from his rath.

A/N: I wasn't able to find the full comic other than the video shown above, so I don't know how this all happened. The fight scene and everything that goes down will be my own version, but I give full credit to the artist below for the inspiration and the user who requested this

Later on in the story I will refer to the good Gaster as Dadster and th bad Gaster is just Gaster. Once the fight is over and Dadster leaves with the boys, he will be referred to as Gaster again

[Based on the comic by thebombdiggity666]

Requested By: acethenonbinary01

~☆~

Gaster wished Sans and Papyrus a good night as he turned out their bedroom lights. He was about to turn in for the night himself when he got an alert that something was going on in the lab. He quickly rushed into the back lab and noticed a strange phenomenon displayed on his computer. He saw himself as well as two very hurt skeletons that looked like his sons in the background lying on the floor. What was happening? What was he seeing? He would never do that to his children, so why was he seeing this? The more he thought about it, however, he came to the realization that his theory about alternate universes was true, yet why was he seeing this now when his home computer couldn't possibly process an alternate universe to be displayed.

Scenes on the screen began to appear, showing the exact time and date that they occurred. Gaster was horrified by what he saw. This version of himself beating and breaking these poor children. He heard their cries, their pleas for help, and he could help but see them as his own sons. He couldn't bear the thought of someone doing this to them. He saw the first time he hurt them, him drilling these handplates into their delicate hands and ignoring their cries, and it broke Gaster's heart. He was mortified by how he broke S-1's eye and blowing up half of his skull. And he endured so much just so P-2 could be spared from the evil scientists wrath, and yet he still couldn't stop him from breaking most of P-2's bones from throwing him about the room. He saw everything this skeleton did to these kids that he saw as experiments, and yet P-2 still expressed hope that he would change.

It didn't take long, however, before something new happened. The screen flashed black a few times before a sentence appeared in his original language, Wingdings. Gaster immediately knew what was happening based on this one simple sentence: Save Them. The world flashed a bright white for a moment before he opened his eyes again, he was brought to this AU, and it was now his job to save these children.

He ran through the halls of the all too familiar lab, eventually stumbling upon the cell where the children were held. Their faces instantly turned to one of horror, immediately grabbing ahold of each other for comfort and the hope of protection, it was a sad sight indeed.

Gaster slowly crouched down to their level, providing a sympathetic and kind smile on his face. P-2 looked up at him, causing S-1 to do the same. They spoke in Wingdings as well, which wasn't surprising considering that they only know their creator.

"Brother, he seems different from Gaster," 2P said, causing 1S to immediately get protective and defensive.

"But he looks just like him!" 1Syelled, though it wasn't very loud. He knew that even the slightest noise could bring Gaster back here.