#underfell doomfanger

[fun-fun-chaos]

the kitty of doom and despair‼️

how’d it get in the Undergound?? who knows! and i dont think cats are supposed to have eyes like that,, hmm

[ut-truck-freak-tier]

~~~~~~~~~~~~~~~

AUpril Day 3 - PET

AU: Fluffytale, SomethingNewTale, Underfell

Characters: Ccino, Red, Killer, Doomfanger and Edge mentioned, Color mentioned.

Trigger warnings: none?

Tags: Undertale aupril 2026, Cats, cats doing stupid shit, killers a little shit. Reds just here for some advice. Give Ccino a break plz

Favourite typo: Cars

~~~~~~~~~~~~~~~

Ccino sighed as he closed up the shop, he was closing early to make time for the club.

Thats right he decided to start up a club! After being asked several hundreds of times on how to care for cats, by cat owners, future owners, or just curious bystanders.

“Ccino, how do you know the best food to feed a cat?”

“Ccino, what kind of kitty litter do you use?”

“Ccino, what treats are best? I’m worried this one’s too poor in nutrients.”

“Ccino what cat toys do you recommend? Mine broke.”

“Ccino.”

“Ccino!”

“Ccino?”

Ugh it was starting to get annoying, so annoying Ccino put up a sign in one of the windows. Friday evenings at 7pm he would host a little club, where anybody could come in and ask questions or tell stories about their cats.

After he finished cleaning up and putting out the club sign, he sat there and waited.

. . .

. . .

Its been half an hour, with how often he was getting questions he thought somebody would BE here by now, ya know?

Sighing he checked up on the cats, most of them were asleep, though some were playing.

Sighing again he walked over to one of the tables and sat down head in his hands, what was he doing wrong this time?

He heard a jingle as the door swung open. “Hey Ccino!” A familiar annoying voice called out. Oh Stars it was Killer. The most infuriatingly annoying, yet somehow sympathetically charming customer from the Sans’s he had, that wasn’t Nightmare himself.

Sighh. “Hello Killer.” He said exhausted.

“Hello to yourself! Hahah. Thats a good one!” He almost doubled over laughing.

“What are you here for Killer? Im not making anything tonight-“

“Nahhh I’m not here for that I’m here for your little cat club!” He pulled out a poster and held it up, one in which he had stolen from outside the building.

“Wha- how’d you get that!? i didn’t make any fliers!?” He noticed the poster on the window was gone.

“Killer. Go put that back please.” He put his hands on his hips, stars he sounded like a tired mom, if this was what tonight was gonna be like he was gonna go insane.

“Aw why? Im just having a little bit of fun. It’s a really neat poster! I wanna look at it longer!” He tilted his head to stare at the poster.

“Killer, please go put it back where you found it.” He really hoped someone else showed up tonight, so it wasn’t just him babysitting a grown ass man, where was Color when you need him? Come get your man he does not need more enrichment!

Killer smiled at Ccino with empty eyes, you really couldn’t tell what he was feeling.

“Okay, whatever you say kitty cat!” He walked over to the window and put the sign up, facing the wrong way.

“Killer!!” Ccino squeaked out indignantly, his cheeks puffing up blue.

“What? I thought you wanted it on the window?” He said smirking evilly.

“The other side Killer!!” Ccino pinched the bridge of his nose, stomping his foot on the ground.

“Okie dokie!” Killer bounced, proceeding to move it 2 feet to the right.

“No OUTSIDE THE BUILDING KILLER!!” Ccino yelled exasperated. “And right side up on the window!” He held his hand up in emphasis.

Killer just laughed as he walked out the building, doing it correctly this time, then walked back inside.

“Alright prissy boy your posters on correctly.” He smirked.

“Prissy? I- uhhhng.” Ccino just accepted the nickname and walked outside to be sure he did it correctly.

Killer locked the door behind him.

“Wha- Killer! Oh my stars.” Ccino sighed and shortcut inside, crossing his arms while he glared at Killer.

“Oh. . . I actually forgot you could do that. . Somehow. . Thats awkward. Um sorry?” Killer said sheepishly, seemingly done having his bout of fun.

“Okay. So if we’re done with all. . That. . . Since it’s almost an hour in and you’re the only one who’s arrived for the club so far. Why don’t we get started?” He said through chipped teeth.

Ccino was hoping this would distract Killer and keep him occupied, but in all seriousness he just wanted to close up shop and go home, he was feeling nervous and tired, he sat down at on of the booths.

Killer perked up at this. “Oh no, my friend’s coming, he’s just running a little late.” Killer smiled watching Ccino jump at this, he was ecstatic this would be so much fun!

“Wait what. What friend?” Ccino was feeling even more nervous now. If it was any of the Murder time trio it wouldn’t end well. Wait maybe its Color, maybe he’s saved from having to deal with shenanigans, maybe-

The door swung open with another jingle, wait when did it get unlocked?

Underfell Sans walked in.

“Oh good this is the right place. Thought i was lost for a second.”Red walked over and sat down on the other side of Ccino, Killer plopping down next to him.

“Heya Ccino right? Nice place you got here, real nice n cozy” he put his arm on the table.

“U-um thank you?” Ccino got straight to the point. “Okay. So. . . Um. . . Thank you both for coming to the official first um. . Club meeting?”

Red and killer both blinked. “You don’t sound to sure of yourself sweetheart.” Red said tentatively.

“Um. . Well. . It was supposed to be. . But. . You two are the only ones who showed up. . So now I’m not sure anymore. . . Maybe this was a bad idea.” Ccino put his head on the table and wrapped his hands around his skull.

“It’s a great idea!” Killer slammed his hands onto the table! Ccino looked up at him briefly through his fingers, “I love talking about my cats! And Reds been wanting to know more about how to take care of them! Right Red?”

“Yeah. Doomys uh, given me some trouble.” Red ran his fingers along the table.

Ccino perked up at this. “Wait. . You have a cat?” Ccino questioned lifting his head up and sitting up slightly.

“Uh, well shes not really mine, shes my brother’s. But yeah, got a cat.”

Ccinos eyes sparkled a bit, maybe this could work afterall!

“Okay! I can work with this!” Ccino said almost giddy.

Killer smiled wider, and Red tried not to look a bit nervous. He was mostly doing this so he could get along with his brother’s cat more, to make him happy.

“So what do you wanna know about cats Red?” Ccino looked at him intensely.

“Well. Idk like to know why she keeps clawing and scratchin at me, but doesn’t with Edge.”

“Hmm when does she scratch at you?” Ccino asked.

Red looked confused but responded accordingly. “When i walk near her, or when i try to pick her up.”

“Is she a monster cat or a regular cat?” Ccino suddenly asked, this would change his answer on why shes doing this.

“Um. A monster cat i think. Cant speak english tho.” Red tapped his fingers to the table nervously.

“I see.” Ccino said thoughtfully. “Perhaps she doesn’t like being picked up, and shes trying to tell you to give her some space.”

“But shes just fine when Edge holds her!” Red almost snapped.

“Hmm, perhaps it’s cause she trusts Edge more than you? Some of the cats here will only let me hold them but not customers. If shes bonded with Edge she might trust him with things she doesn’t trust you with.”

Ccino wasn’t fully sure, without meeting the cat itself it was hard to tell where the behaviours were coming from. And of course someone like Red would never admit to abusing it or something.

Not that Ccino thought he was. He probably wasn’t. He should stop thinking like that. It’s not even Reds cat why would he hurt it?

Red was now staring at him peculiarly. Shit he had gone quiet for to long, did he say something?

“Sorry did you say something?” Ccino asked nervously, playing with his hands.

“I said ‘that makes sense’ she does seem bonded with him, he found her injured and nursed her back to health. But it’s almost like. She’s jealous of me? Every time i hang out with Papyrus and she doesn’t she gets pissy at me.”

Red sighed exasperated, he just wanted the cat to get along with him.

“Interesting. Perhaps she is getting jealous? You should talk to your brother about that, I’m not sure how to help with that. Make sure he’s giving her time and attention right after spending time with you, so that way shes less mad maybe?”

Not sure what to do here, he gave the best advice he could on the matter.

“That might work. Thanks” Red said with a genuine smile.

“Okay. Um Killer are you having any issues with your cats?” He asked suddenly.

“Nope! Not really, but oh. Soop keeps falling asleep in the sink by accident. Hahah. But nah i just came cause i wanted to talk about cats, I’m having no issues.” Killer smiled sweetly knowing Ccino was internally screaming.

Ccino was internally screaming, why had killer come if he was having no problems!? Just to talk about cats!? he could do that at any time with any of his friends!?

Ugh at least Red actually came for what the club was about. Wait, the poster said you could also tell cat stories. . He faced palmed internally. This was going sooo well.

“Well, i guess if theres no more problems we can talk about cat stories?” Ccino suggested weakly.

“Gasp! That sounds like a great idea!” Killer said sarcastically.

“Now, do i have a story for you! it all started yesterday at dawn-“ he started like he was telling a spooky story.

“I was just getting out of bed to go grab some water, when out of the corner of my eye. I spotted him, a Ninja standing in my room!Before i had the chance to react it pounced on me!” Killer raised his arms in the air and recreated the pouncing motion.

Red faked a gasp. Ccino rolled his eyes.

“And what happened next?” Ccino asked sarcastically.

“The ninja used its sharp dangers and clawed into my bone! Ouch! It was trying to kill me!” He put a hand to his head in mock fainting.

“Then Color turned the light on and reviled it was actually just my cat ninja. The end!” Killer did jazz hands as he said that last part.

Red clapped enthusiastically impressed by the stories faux dark tone. Ccino who saw the ending a mile away clapped as well. Giving Killer the satisfaction he was looking for.

“Thank you, thank you” killer bowed, twice.

Ccino rolled his eyes again, playfully this time. “A lovely story Killer, i was on the edge of my seat.”

“You better have been!” He said jokingly, pointing at you as he slammed his other hand down on the table again.

“Reminds me of the time i found Doomfanger hanging from the ceiling, no idea how she managed to get up there. But damn it took us a full hour to get her down, only for her to start climbing up the wall again!” Red waved his hand in the air in emphasis.

Ccino laughed. “Cats can be so silly sometimes.” He said.

“Just the other day the star kitties got all bossy with me! Dream er i should call them something else so you don’t get confused. . .”

Ccino thought for a moment.

“. . .Dreamy? Was demanding attention and pets, Inky wanted nothing more than all the food i was making! And Bluey was bossing the other kitties around, trying to wake them up and force them to chase him! Lets just say the other cats weren’t impressed and a fight started-“

“Bahahha! Yeah that sounds like Blue all right!” Red bellowed out.

Killer giggled as well nodding in agreement. “Sounds like all of them lol.”

“Did you just Say lol? out loud?” Ccino asked giggling.

“Yeah lol whatcha gonna do about it lol?” Killer started saying it on purpose just to try and annoy Ccino, but he found it funny instead.

“Hahahahah, oh man thats funny.” Ccino was almost crying cause of his laughter.

“Lol lol lololololol” killer started singing, trying to be as silly as possible to make Ccino laugh more, Red started laughing to.

Haha! Success! Now everyone was laughing.

“Hahahah. . . Ha. Got any more stories to share?” Ccino asked happily. This had been more of a success than he could ever hoped for.

Killer started talking about how hard it was to bathe cats and how they jumped everywhere.

Red then interrupted with how Doomy would let Edge wash her and pamper her like she was a princess and how much she loved being petted by him, but any time he tried she jumped away and swatted at him.

Ccino smiled softly listening intently, and even joining in with his own stories on how Nighty hated baths too.

In the end they talked until the regular closing time, which was 12am. Ccino had exchanged numbers with Red and they had all promised to meet up next Friday.

Ccino smiled as he watched his to new friends leave and doubled checked that everything was clean and locked the doors.

This had been the best idea he ever had.

He couldn’t wait for the next meeting.

~~~~~~~~~~~~~~~

Woke up early so im posting this now, Hoiii, hope you enjoyed this fic this was the easiest to write so far and the funnest! Loved writing Killer he’s such a nutcase lol. If you enjoyed this fic let me know by reblogging it or commenting! Makes my day so much better! Check my pin post for other aupril fics!

@undertale-aupril

[the-fabled-void]

Doomfanger beloved. Underfell peaked when people starting adding him to stuff

[noffy96]

Little headcanon/ story idea

Since I plan in back home to make Nova and Roman best friends

That means Burgerpants and Nicecreamguy and some point is gonna meet Edge and with Edge comes his cat Doomfanger.

So yeah Doomfanger and Burgerpants are definitely getting into a fight when no one is looking.

No Burgerpants will not elaborate on what happened afterwards..he is just gonna be grumpy about it. Well edge hold onto a very discruntled doom

NC is gonna kiss all the scratches better of course.

Roman will become like BBf's with doomfanger much to his father's chagrin

(do, Roman edge and doom play pranks in BP...for.sure)

[evilmakesthings]

Stim board for Doomfanger from Bonely Hearts Club (11/12).

Please read my pinned post before interacting. Please do not tag as kin! Sources below.

🥛-🥛-🥛-

🐈 - 🐈 - 🐈 -

🤍 - 🤍 - 🤍

[haveyouseenthisskeleton]

Random Doomfanger facts because I'm tired

Who cares about skeletons when you are an handsome and heathly cat ? Doomfanger's slave is Edge, and here are her headcanons. *TU-DUM*

Random introduction :

Doomfanger, despite her name, is a lady. She is a maine coon and ragdoll mix, and she is five years old.

She loves being pet behind the ears.

She also loves to put her butt on strangers face in their sleep to see how long the can bear not to breathe.

Tragic backstory :

She was find when she was a very little kitten. Actually, just like Frisk, Doomfanger fell from the Surface and somehow survived. Toriel opened the Ruins door just for her because she is allergic to cat. After that, she finds Red at his post. He looked at her, she looked at him, he looked at her, she looked at him, and she decided she hates his face and randomly attacked him. What a nice relationship start ! Edge came to save his brother and wanted to kill the cat, but seeing her little face and her big blue eyes, he renounced and left her here.

Doomfanger understood very quickly he was a potential food source. All she had to do is showing up the next day and enter the house by an open window, and it was over. Edge begged her to stay and she accepted to make him her slave. Or the contrary, who cares.

After that, she lived a normal life : beating that tiny skeleton to steal his place, whining when Edge is coming home so the tiny skeleton have to sleep outside, eating the tiny skeleton food when he isn't looking, sleeping in the tiny skeleton bed and miaowing of agony when he entered the room to move her so her slave can beat him up... Such a nice life <3

When the Barrier broke, she move on the Surface with her skeleton slave and continue her life like nothing changed... More or less, since the tiny skeleton had his own home now. How sad.

Normal day :

Doomfanger is awake at 6 am precisely. At 6:02 am, she is coming her slave room to claim her food. If he's not awake at 6:04 am, she pees on his bed.

After eating breakfast, she is going outside to watch the sunset rising. Just kidding, she is going straight to the neighbor to beat the neighbor's cat so she can eat his food.

After eating her second breakfast, she goes hunting. A bird, a mouse, the mailman... She had to bring a gift to her slave so he keeps feeding her. Today, it's the mailman. She stole a bunch of letters in his bag and bring him proudly to Edge. As a reward, he gives her some treats, then he haves to go to work, so he let her go in the garden.

She sleeps in the sun until noon, and then she goes to the tiny skeleton house. Usually, he is sleeping in the garden when it's a sunny day. She attacks the tiny skeleton and stole one of his slippers. The tiny skeleton is running after her, but she is more clever.

In the evening, she gifts the slipper to slave, so he gives her dinner. He is always congratulating her when she beats up the tiny skeleton. She is such a good kitty. After that, she is going out one last time to beat the neighbor's cat and stealing his food again.

Finally, she comes home to cuddle on the sofa until Edge goes to sleep. If she's too bored, she just have to sit on his face because he is doing funny sounds. Then she goes to sleep in his clothes because it's the only place she is not allow to go.

[vex-bittys]

Flufftober 2020: Day Eleven

Prompt: Finding/Adopting a Pet

Pairing: Underfell Skelebros

Category: Familial

----------

The skeleton brothers from the Underfell universe didn’t need reasons to argue. Their antagonistic brotherly relationship transcended their life in the Underground, following them to their new home on the Surface. Most of the pointless altercations ended with Red storming out of the house, door slamming behind him on his way to Grillby’s. By the time he stumbled back home in the wee hours of the morning, the animosity had faded away into mild worry on Edge’s part over his brother’s whereabouts.

Scoldings over his trips to Grillby’s comprised a rather large percentage of the argument fodder, and unfortunately, when Red opened the door that day to storm out to his favorite haunt, Doomfanger darted out before either skeleton could stop her. The little white streak vanished into the hedges that bordered the driveway, and the brothers stood slack-jawed in the wake of her escape.

The shocked silence didn’t last long.

Without missing a beat, Edge berated Red while simultaneously shoving him out of the way to pursue his wayward cat. Edge almost knocked Red off his feet in his hurry to find her, and a string of insults slowly faded into a murmur then to silence as the distance between the brothers increased. Red took a seat on the front steps and closed the door behind him, opting to await Doomfanger’s possible return instead of going to Grillby’s. As much as he hated to admit it, he cared about his brother’s cat… and his brother.

Hours passed, and when Edge finally returned to the house that he shared with Red, he appeared dejected. Doomfanger wasn’t with him. Guilt washed over Red, especially when Edge just glanced at him, too fatigued from his search to even toss a casual insult his brother’s way. At that moment Red vowed that he would not rest until they found Doomfanger… after a good night’s sleep of course.

The next day, the two skeletons scoured the neighborhood, showing everyone they passed one of the abundance of photos of Doomfanger that each of them had on his phone. She happened to be a very photogenic cat and adored the glamor and attention of a photo shoot.

Nobody had seen her, but one helpful neighbor from a nearby apartment complex asked them if they had checked the local animal shelter. Stray cats who were friendly enough to be caught by Animal Control were taken there to either await pick-up by their owners or find new ones through the adoption process. Red and Edge locked eyelights, silently agreeing to check the shelter for Doomfanger.

Never one to simply walk through the front door of a public building, Edge organized a two-skeleton recon mission that involved Red crouching in front of each of the animal shelter’s windows while Edge stood on his back to peer inside. Sure enough, one of the windows yielded results. There could be no mistaking that gleaming white fur and delicate pink nose! Doomfanger sat in her crate, peering down her elegant nose at the other scruffy cats around her.

“HUMAN LAW ENFORCEMENT HAS ARRESTED MY PRECIOUS DOOMFANGER! WE MUST INITIATE A JAILBREAK AT ONCE!” growled Edge, leaping to the ground and immediately sketching out rough, elaborate plans into the dirt underneath the window.

“i think you can just go in and claim her,” Red pointed out, but Edge ignored him, tapping his mandible with the stick he was using to create a layout of the building. Red assumed the acorn and leaf on the diagram were meant to represent them, and the twig “X” was probably Doomfanger.

Edge scanned the surrounding area. “THAT SHRUB COULD HIDE THE ENTRANCE OF THE TUNNEL…” he mumbled to himself. Red sighed and wandered around the side of the building to execute his own, much less involved, plan.

Edge was still mulling over the necessity of drugging the guard when Red returned, cat carrier in hand. Doomfanger let out a disgruntled meow at being shuttled around in such an undignified manner.

“HOW DID YOU RESCUE HER?” Edge asked, leaning over to coo at his beloved pet through the grating at the front of the carrier. Red noticed, but did not mention, the sparkle that appeared in Edge’s eyelights when he baby talked to his cat. “DID YOU FEIGN INJURY TO DISTRACT THE GUARD?”

“no, Boss,” replied Red. “i went in and asked for her. they even loaned me this carrier so we could take her home.”

Edge snorted. “I SUPPOSE THAT’S ONE WAY TO DO THINGS,” he grumbled, scuffing out his carefully drawn strategies with the toe of one boot. He paused as if gathering the mental resolve to deliver his next words. “EXCELLENT WORK, SANS.”

Red basked in the praise. The skeleton brothers did not need a reason to argue, but all of their contentious bickering simply served as a disguise for emotions that they struggled to express. No, they didn’t need a reason to argue, but they were working on finding more reasons to encourage and agree.

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DAY TEN | INDEX | DAY TWELVE

[blak-pawed-stuffed-lion]

Day 15, 16,17- Warmth, Tender, and calm.

Because of how long this took me and the effort I ended up putting into it I’ve decided to use it for all three prompts!