Author's Note

Just a heads up, I, reducing the amount of corruption in Errors voice. After going over a few Error Sans readings I figured I was putting too much into his speech, because the majority of his lines in the readings are said normally.

Error Moon

Error Moon charge up her horn and summoned a small crowd of error thestrals before smirking. "Attack!"

The corrupted bat ponies smirked evilly before taking to the skies and circling Error Sans. He just stood with his hands in his pockets, his eyes following the enemies around him carefully. "G-G-Great, now there's more of-of you to deal with."

One of the bat ponies screeched and charged Error from the air. As it was about to land a hit on Error he stepped to the side and allowed it to crash into the ground. Lifting his open hand up, black bones grew out of the ground below the Thestral and impaled it. As two more of the thestrals charged, Error shot one hand of strings at one of them. It's body twitched for a moment before Error was able to gain full control over it, moving it with his strings as if it were a puppet to attack the other error. Once he had forced it to kill it's friend he then tugged at the already tight strings before pulling back with great force, causing the strings to cut off its limbs and head.

The rest of the errors saw what had happened and snarled at Error who just motioned for them to bring it on. They split up and dived from different directions. Smirking, Error held up one hand and multiple black bones appeared around him and began to circle him like a spiked shield.

The Erris couldn't stop themselves and met the bones face first, causing the bones to go right through their bodies while black goo began to pour from their corpses.

Error Moon groaned in annoyance. "Why did I-I-I think that summoning p-p-pawns would work-work? Fine th-then, I'll face you m-m-myself."

"S-S-Strange, they were so-o-o-o weak I assumed one of t-them was you." Error teased while smirking. He swung his strings to the side to throw the black blood off of them. With one hand holding strings and the other ready to summon a Gaster Blastet, bones or use a blue attack, Error took a fighting stance. "Well t-then moony, let-let-let us see w no is the better-er error."

"Wait wouldn't a better error just cause more problems?" Twilght asked, her logical sure taking over for a moment.

"Y-Yeah, that's why I really want that title." Error responded with a tone both serious and joking. "Now...who w-wants to see a-a-a-a corrupt skeleton tear a delusional soul to pieces?"

Error Moon growled before charging her horn and sending a wave of corrupted magic towards Error who used his strings to pull himself away from the attack before raising his free hand, causing multiple black bones to appear before they were all shot towards Error Moon who put up a magical shield to defend herself, but causing a dust cloud to gather as the bones impacted the field.

Error ran forwards with a large bone in his hand while Error Moon was blinded. Once the dust settled Error Moon received a bone to face and was knocked up into the sky due to the sheer force. She steadied herself with her wings and began to fire rapid magic bullets down to the ground.

Error kept flash teleporting out of the way of each bullet that would have hit him before he shot his strings up to Error Moon, managing to wrap them around one of her hooves. He then pulled down with a sadistic smile in his faced as she impaired the ground. He then began to spin his body around while slamming Error Moon into various spots in the area before throwing her up into the air, summoning two Gaster Blasters and firing two large beams at the error, the beams were large enough to cover her entire body when they hit.

Error Moon fell to the ground with a hard thud, smoke coming off of her singed fur. Error just wiped a drop of sweat off of his forehead, not used to fighting after so many centuries of inactivity. Walking slowly over to her with a bone in his hand he looked her in her voided eyes, seeing the absolute hate that they held within them. He knew that her mere existence was torture to her, being an error is extremely painful as the entire multiverse is trying to break your body down as if you were a disease. The only reason Error could deal with the pain and even get rid of it was because of the way he was displaced, plus his fiancés love and support through the times he did feel the pain.

"D-Don't worry, I'll make-ake this quick." Moving to her side he levelled the bone with her head. As he was about to bring it down and purge the error from the world he felt his hands being bound by a magical aura.

"Stop!" Twilight yelled in a panic. "She's defenceless now, you don't have you kill her! We can use the elements or try to change her to good."

"Twilight, that's not how this works." Celestia said carefully.

"But its wrong!"

"You didn't seem to have a problem killing Sombra." Rainbow Dash pointed out while folding her front legs.

"We can't just kill her! We killed Sombra on accident, I thought the was going to be banished to the ice again!" Twilight countered.

"W-W-Well then princess, I've got-ot good news!" Error said while smirking evilly. "You guys aren't ki-ki-ki-killing her...I am." With that he stabbed the bone into Error Moons skull and her body disappeared in a puff of black smoke, the only thing left behind was the top of her horn. Error picked up the tip and placed it in his pocket to keep as a trophy to remember another victory, and another soul set free from the madness being an error brings.

Luna and Celestia nodded with small smiles while the rest of the ponies just it her stared mortified or unfazed. "Good job Error, it's good to see that your fighting skills haven't aged too much." Luna complimented with a playful insult.

"Oh haha-a-a-a-ahah. You're one to t-t-talk Lulu." Error joked as he walked past the ponies. "Now, if you'll all-l-l-l-l excuse me, I'll be-be going before the l-locals see me."

Luna and Celestia were about to protest but when they turned around he was already gone.

Back in the underground caverns Toriel sat watering a few plants that grew in her private garden, the plants, trees and grass getting their sunlight from a hole in the ceiling that was right at the top of Canterlot Mountain, the garden built into the centre of the mountain.

She heard the sound of a portal opening and looked back to see Errot standing on the grass with his usual smile. "Oh, there you are Error, I take it you won against whatever was up there?" She asked casually with a small smile.

"Yeah, another suc-successful hunt." He flipped the horn tip in his hands for a moment before stopping. "I'm going to-to leave it in the tr-trophy room, then you and I-I-I will be spending some q-quality time together."

"I'd love that hon. Now go and add your new toy to your collection." Toriel ordered with a smile.

"Hehe, y-yes ma'am."