Yo! This is a very short Papyrus x Mettaton fic, called "A Fatal Flaw". Basically, Mettaton goes psycho and tries to kill Papyrus, but he comes to his senses and he needs help, and lots of it. Mainly from the coolest skeleton ever that he's just tried to kill. It takes place after the first chapter of this story, so yes, there will be occasional references to it in this. I apologize for taking so long, I feel bad for typing slowly/being busy with other things so I rushed this towards the end… so uh… sorry. Have a cruddy ending. *Slides it over to you and then runs away*

Also, on another note, I'm working on a platonic Frisk x Flowey fic, an Undyne and Alphys fic, and I will soon be starting a romantic Asriel x Frisk in a little while, as well as a platonic Sans and Baby!Papyrus ((It's probably going to be called, "Playing Doctor")). It's more than probable that I'll make a Napstablook x Mettaton, as well ^^ the Frisk and Flowey one will hopefully be up tomorrow!

ONE LAST THING. I promised someone that I would write a Sans and Frisk story, but I've decided that it will be it's own story entirely, as I doubt I'd get off my ass enough to sit down and write all of what I need to do in a single chapter… so, until I get everything worked out for that one, I'm just going to be writing a fluff story for them for now, and in a month or so the original idea will become a story.

AHAHAHAHA I lied about that being the last thing. If anyone wants to do a roleplay with Mettaton x Papyrus or Mettaton x Napstablook, I'd be happy to do it with you ;0 Just send me a PM or something and we can arrange it ^^

Everything hurts. There's no peace in his mind anymore, just anger and sadness and hurt. No, this wasn't the type of pain Mettaton was used to anymore. It was an awful burning sensation that began in the very core of his being, that speared through his soul, leaving scrapes and puncture wounds. That pain spread from his chest to his fingertips, fogging his mind at blocking out all rational thoughts.

Mettaton can't control himself; he needs to kill something...anything... He felt a sharp pang of fear, before shaking his head wildly to try and get these demonic, awful thoughts out of his head.

It began as a habit several years ago, when he offed a small, frog like creature that was locked outside of the ruins. It had felt so amazing, so deliciously hideous and sadistic. Mettaton couldn't stop himself, he would turn into a killing machine at a moment's notice. He'd thought he'd broken the habit, but... No. It was coming back.

Mettaton shuddered, before he felt himself completely lose control to his bloodlust. He needed to wrap his hands around someone's neck and snap their spine, or slowly puncture his victim's lungs and watch the life in their eyes disappear as they died a slow, painful death. Mettaton didn't care who he would soon kill, he'd just pick the closest person; and that just happened to be Papyrus.

Mettaton knew that the naive skeleton was cooking something in the kitchen, presumably spaghetti. How he'd love to crack the skeleton's skull on a kitchen counter top, or pin him down and shatter all of his bones, one at a time… the very thought made him shiver in sadistic delight. He couldn't wait, this was the perfect opportunity! That bastard skeleton, Sans, was gone at work and wouldn't be able to make it home in time, even if there was any way he could know Papyrus was about to be murdered.

Very stealthily, trying to stifle an insane giggle, he peered around the kitchen corner to where Papyrus was working, and recoiled when he was noticed. "Metta! Hi! Do you want some spaghetti? It's made by the great Papyrus!" He turned around, revealing himself to be wearing an apron reading, "Kiss the Cool". The word, 'chef' was scribbled out with a sharpie and 'cool' was written in with the same marker.

"No, no, I'll be fine," Mettaton chuckled, approaching Papyrus's side and standing almost awkwardly close to the other.

"Oh…" Papyrus looked down sadly, and snuck a peek back up at the robot to see if his face had any signs of pity or reconsideration. By now, Mettaton would have broken and tried some of the skeleton's cooking, but… he wasn't the same person right now.

"Now darling, there's a special request that I must ask of you..." He smiled, warm and deceiving.

"Really?! Is it something that only the cool Papyrus can take care of?!" He immediately grinned and raised his head.

"Yes... I must ask you to not scream too loudly, darling~"

"Can do- wait, wh-" Mettaton lunged for Papyrus, his metal fingers curling around his neck. Papyrus yelped dramatically, trying desperately to shove the other off.

"What are you doing, Metta?! Stop, that hurts!" He yelled as several sharp hits were aimed to his head. He didn't retaliate, not wanting to hurt his friend in this was some sort of cruel joke.

"I told you not to scream, love," Mettaton chuckled and pinned Papyrus against a wall, forcing him against it until there was a soft crack, signalling something in the skeleton's had broken.

"Please, stop! This isn't you, you wouldn't hurt me! Please, it hurts!" Papyrus screamed, feeling one of the bones in his arms crack painfully. "I don't want to hurt you!"

"Hurt me~? Hurt your dear old friend Mettaton?" He feigned a pout, but his lips twisted upward into an awful, cruel smile. "Why would you be so cruel, Pap, to hurt me?"

"This isn't you, stop! You're going to end up hurt!" Papyrus shuddered at the use of his usually quietly, admiringly spoken nickname. He was growing angry, to the point where he was about to snap.

"Why are you talking about hurting me...? Why would you hurt such a sweet, innocent star like me...?" Mettaton giggled, reaching out to hit the skeleton's head.

Papyrus's hand shot up and caught Mettaton's before it could hit him. "I. Told. You. To. Stop. It."

Oh, shit. One of Papyrus's eyes glowed a fierce, fiery orange, seeming to be a fire within his hollow body. This was an ability that was known only to exist in his brother, Sans.

Mettaton gasped as he was thrown off of Papyrus and slammed against the floor, the other standing over him.

/Papyrus no longer believes in you./

"You aren't going to kill anyone," Papyrus growled, a major change from his normal happy go lucky attitude. "Or you will die where you stand."

"Oh, will I, now?" Mettaton got to his feet and took a step closer to the angry man. "Tell me, have-" he was thrown against a wall harshly.

"I'm giving you one last chance, Mettaton! You're not like this!"

"This... Is who I am! It feels... Great," he grinned. Mettaton grabbed Papyrus's scarf and tore it down the middle, but it went ignored by Papyrus as he was tackled to the ground, Mettaton tumbling down with him. He straddled his torso, winking and

"Stop!" Papyrus yelled, to no compliance of his request, gasping as he felt his already broken arm break more.

"Mmm, no." Mettaton pretended to think deeply before giving his predecided answer, seeing the fiery light in Papyrus's eye flicker out. He was losing. Losing the fight, losing his will to continue.

Mettaton reached out, about to snap Papyrus's neck, before the skeleton's hand making extremely gentle contact with his chest made him flinch and halt his action momentarily.

"You have a heartbeat," Papyrus whispered, seemingly amazed. "I've always wanted a heartbeat," he said airily, awestruck.

"Oh yes, they are amazing, aren't they? Too bad you'll never have one," Mettaton went to nudge Papyrus's hand away from his chest, but it stayed there, like it was locked.

"People that hurt others don't deserve such a cool thing as a heartbeat," suddenly, Papyrus had thrown Mettaton off of him, both eyes aflame now. He seemed to glow with the very same orange aura.

The robot tried to shove him back down, but he didn't budge. He began to fear for himself... Would the skeleton take his revenge...?

Papyrus bent down so he could be level with Mettaton, sending shivers down the robot's back. His hollow eye sockets bore into Mettaton's soul, seeming to try and burn him with the orange flame.

Suddenly, Mettaton felt everything rush back. He had hurt Papyrus, the poor skeleton who had taken care of him for two weeks now after Alphys went on a trip with Undyne. The one who had stayed with him out of the purity of his heart when he was trembling over a thunderstorm that first night. The one who so gleefully trys to help everyone that requests it.

"I'm s-sorry," Mettaton breathed, seeing all the damage he had caused. A crack running up the skeleton's arm, chips in the bone in other places. "I couldn't c-control m-myself, I-"

The lights in Papyrus's eyes faded, and he crawled towards the robot, who flinched out of fear. "Hey. It's alright. I'm not mad at you..." he said quietly, pulling Mettaton into his arms. "I understand... Sometimes I lose control, too." He tensed as the robot let out a gasping sob, clutching at the ripped scarf as if it were a lifeline.

"It's okay now, don't cry, okay? I didn't hurt you, right?" He asked, completely ignoring the searing pain all over himself.

"I'm f-fine, but y-you a-aren't, you idiot... You look... Broken..." It was true. Papyrus had cracks in his bones only from tonight.

"It's fine, Metta." He reached up and ran his bony fingers through the robot's silken hair. "Just stay here with me for now..." There was a pause. "The great Papyrus was pretty pathetic today..."

"N-no you weren't... I w-was..."

"You weren't pathetic, just... Not as cool as me." Papyrus chuckled, his old self coming back to him. "Just don't go psycho again, okay?"

"Deal... Are you... G-going to mention this to Sans...?"

"Nope! I'll tell him I fell and that's why I look beaten up. He'd just get mad at you if I told him what... Actually happened."

"How... Can you still be trying to protect me?! I just tried to kill you!"

"It's not like things will be completely back to normal... I don't think I'm going to be able to trust you." The miniscule spark of maturity in Papyrus had grown to an all time large. "But... I think maybe you're still cool enough to work hard so you can be my friend again."

Mettaton felt his heart shatter at the words, "maybe you can become my friend again". Damn it... He was supposed to be the mature one! He should have taken it and accepted it. It shouldn't affect him like it did.

"I'm... Not your friend anymore?" Mettaton asked, keeping his eyes directed at the floor as he asked this.

"Well... No..." Papyrus averted any and all possible eye contact.

"You… still like me though, right?" Mettaton's voice shook, his hair falling over his eyes.

"Metta… you know the answer."

"..." The robot suddenly flinched, as if he had been hit. "I… should have… expected you not to like me anymore…"

"What are you talking about? Of course I still like you! You just need to work a bit to earn back my trust."

Mettaton didn't respond verbally for at least three minutes, but instead he wiped at his eyes and whimpered. After a little while, he broke the last lingering bits of silence. "What happens if I go crazy again? I could go after you or Sans or a child… or Alphys or Undyne or someone…"

"I guess I'll have to work with you on that… but, here, this might help for now." Papyrus leaned forward and gave Mettaton a gentle peck on the cheek. He pulled back, his cheeks aflame with a bright pink blush.

"Wh-?! Wh-what?" Mettaton seemed to short circuit, eyes wide and disbelieving. He just didn't understand Papyrus today… he had just tried to hurt him, and yet… he was still being as sweet and innocent as he always was.

Papyrus shrugged. "Well, you have the potential to be better than a friend, you know. And if I were you, I'd try to flatter me. The great Papyrus has selected you out of a plethora of other monsters to be my favorite, bestest person that I also like! Also, if I didn't like you, I wouldn't have forgiven you this easily… I guess if you don't like me, too, it's fine, but consider your options!" Papyrus grinned.

"..." There was a moment of silence before Papyrus yelped out of surprise as he was slapped upside the head, however it was clear that there wasn't ill intention behind the action. "You… you numbskull! I l-like you, too!"

Well, this relationship was going to turn out exciting.

I'm so sorry for that ending… I feel like you guys believe that I abandon the stories so much (but the other ones are either completed or are on a temporary hiatus) and believe me I'm not abandoning this one, nor putting it on a hiatus anytime soon.

IF YOU HAVE ANY PLOT IDEAS, LEAVE IT IN A REVIEW PLEASE, OR PM ME!