#beel was angry with mammon during his arc and asmo never uses his demon form in anger around mc | Explore Tumblr Posts and Blogs

jaeheewillalwaysbemyfav · 3 years

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Can u make mc is the actual owner of Cerberus when he was a pup but villagers killed him because they thought that he was a monster and what how would the brothers and the undateable react to that when mc started to cry when she saw Cerberus headcanons

Oh Beans! I totally spaced when reading this and only have the brothers.

I'll post what I have here right now, but this will also be on AO3, so if you keep checking/subscribe there, you'll get a notification when I've added the undateables! It might not be for a while though, since I'm about to start school again ^-^;;

Who's a Good Boy?

The Guard Dog of the House of Hades. A vicious, three-headed hellhound that only the fallen Morningstar himself could command. Unfathomably massive. Devourer of demons, angels, and humans alike. Notoriously difficult to groom.

That is Cerberus, Lucifer’s extremely volatile pet named after a figure from Greek mythology for reasons no one truly understands. The creature has struck fear into the hearts of its housemates, and the Devildom at large, for what feels like ages.

So when MC cries upon seeing the wolf-dog for the first time, none of the brothers are especially surprised. How could a human cross such a monster’s path and live, after all?

Except those who weep in fear usually don’t then barrel full-tilt into one of the monster’s furry legs, babbling incoherently about how they thought they’d never see him again.

One of Cerberus’ heads leans down to the human, and the brothers panic, fearing the worst. It opens its mouth, revealing razor sharp fangs—

And licks MC’s entire body in a saliva-filled canine kiss. Now covered in tears and drool, MC laughs as they shake themself off, teasing the hellhound by saying that they already showered today, thank you very much.

“So, did you miss me as much as I missed you?” they ask, giving Cerberus’ central head some under the chin scritches (the only part of its head they can currently reach).

Cerberus boofs loudly, enormous tail waving back and forth at an increasingly hazardous pace.

Lucifer

What.

Lucifer is dealing with a Lot right now. He almost lost the exchange student to his own dog, except apparently Cerberus used to belong to MC?! How?!

He orders Cerberus to back away from the human, part of him still convinced that this is somehow a combination of MC being mistaken and Cerberus playing with its food, but the hellhound actually growls at him and picks MC up by the back of their shirt, tossing them onto its back.

MC, in response, finds new places to scritch.

He stares at the scene for a few minutes, unable to process what his life has become.

Later, once Cerberus finally agrees to let MC leave, they explain to him that Cerberus used to be a puppy in the human world.

Obviously, he was immediately noted as strange due to his three heads, and the people of MC’s village believed him to be an omen of death. MC themself didn’t care, and just saw “lil’ Cerb” as a puppy like any other, albeit an exceptionally drooly one.

He used to be more or less normal dog-sized, but it quickly became obvious that Cerberus was growing fast, and would be much larger than even a wolf by the time he was done. He also became harder and harder to hide.

Unfortunately, one night they awoke to poor Cerberus being chased out into the night by a mob, never to return.

They assumed the worst, mourned, and got on with their life as best as they could. But seeing Cerberus— they knew it was the same dog as soon as they saw him — brought all those emotions right back to the surface.

It’s not hard to adapt to these strange circumstances. Lucifer is actually quite relieved to have someone who is both willing and able to safely help him in caring for Cerberus, and both MC and the hellhound delight in each other’s company.

Lucifer also won’t deny the pride he feels upon seeing MC, the one he loves, getting along so well with his son dog.

Mammon

HHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHH

The P A N I C of seeing MC within bite-chomp-murder-kill distance of Cerberus nearly killed Mammon.

What the hell is he supposed to do against that furball?! MC’s dead meat, a chew toy, he can’t save them again—

WHAT THE FUCK ARE THEY D O I N G ? !

Torn between passing out from fear and yelling about how brave and cool HIS human is!

So he kinda just… stands there, slack-jawed, as MC finds a spot on the creature that makes it thump its leg so hard the ground shakes.

Already he’s cooking up ways to use MC’s Cerberus-taming powers to get into all kinds of Shenanigans

Except he quickly learns that while Cerb is much more gentle with MC, it won’t let them distract it from its duties.

Has this resulted in MC semi-unwillingly riding Cerberus as it chases a terrified Mammon throughout the Devildom? Possibly~

Though when MC explains to Mammon how Cerberus used to be their dog, and what had happened to him… He can’t help but feel a touch more sympathetic to the hellhound.

Only a little bit though. It still does try and tear him apart whenever he gets too close, after all.

Leviathan

Levi’s fear metamorphoses into awe much faster than the others’. MC LOOKS SO COOL!! Riding the mighty Cerberus like a steed!

He desperately wishes he had the art skills to capture this iconic moment forever. But alas, a camera will have to do.

It’s a pretty good picture, the comparatively small human sitting on Cerberus’ back like something straight out of a fantasy novel. Levi even has a shot of them accidentally scritching a spot that makes Cerberus breathe fire (like a furry dragon!)

100% gets super emotional when MC tells him how they originally had— and lost— Cerberus as a puppy. It reminds him of his precious Henry 1.0 in some ways…

Begs MC to let him post the photos he took, along with their story as the caption. It’s just too good! It’s exactly like that arc in My Adventurer Boyfriend Keeps Adopting the Monsters He Beats in Combat and Now We’re Running Out of Space to Keep Them!

Like Mammon, Levi also quickly learns that just because he unlocked Cerberus’ tragic backstory, doesn’t mean that the hellhound will treat him any differently.

But sometimes, after a long “walk” with MC, the massive creature will be mostly asleep. And then, his hand shaking, MC will guide Levi to pet Cerberus’ flank. Its tail swishes softly, Levi’s own swaying in response.

Satan

He shakes his head and laughs, torn between relief, awe, shock, and lingering horror for MC’s safety. Of course they can tame even the ferocious Cerberus…

Guess all sorts of angry monsters like MC, huh?

He definitely wants to hear the story of MC owning Cerberus in the past, but first he’s going to drink in the absolutely dumbfounded expression on Lucifer’s face.

Toooootally doesn’t cry upon hearing MC’s story with Cerberus. No way, he’s still a cat person, he swears!

...No one is allowed to comment on Satan’s various burn injuries that occur over the next few weeks.

Not if they don’t want to be left with worse.

Asmodeus

OH SHIT!! Also, ewwwww

Once the fear for MC’s safety subsides, Asmo can appreciate the cuteness and hilarity that is MC with Cerberus. Truly no one is immune to their charms it seems, and their affections know no bounds.

...Is it that same quality that allows MC to continue to care for him and his brothers despite their past actions?

Asmo claims that the smoke from Cerberus’ fire breath is getting into his eyes, prompting him to leave. He has a good long stare-at-a-wall crisis for a bit.

Learning MC and Cerberus’ story only makes him mushier. Their tragedy got a happy ending after all!

As much as he loves MC’s charms, he still insists that they de-drool themself before touching him or any of his things. It stinks like brimstone!

Now if they need any help getting clean… That he can oblige~

Beelzebub

HHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHH part 2

As one of the physically stronger brothers, when Lucifer’s not available it’s Beel’s job to groom Cerberus. He knows how dangerous that mutt is.

But apparently not for MC “Knows No Fear” over there!

As Cerberus continues to remain docile in MC’s presence, Beel starts to appreciate the cuteness of a human and their giant hellhound.

Unabashedly mushy upon hearing MC’s story about Cerberus. The themes of losing a loved one, only to find them much later in a new form… it kinda hits a little close to home for him.

(It’s not a perfect analogy: Beel knows MC isn’t Lilith, but having them as part of her legacy is undeniably cathartic. It’s why he doesn’t share these exact feelings with them, since he knows they’re uncomfortable with being compared to her excessively. Still, he can’t help but note the comparison.)

Naturally, he’s also very happy to have a very useful partner for grooming Cerberus. That living nightmare turns into an overgrown puppy whenever MC’s around. It’s much easier, and much safer, to work with this way.

Plus, it means he gets some quality time with MC! And there’s nothing quite like the fond smiles they share with him during these moments.

Belphegor

He has got to be dreaming. No way is this actually happening— nope, Mammon just stepped on his foot, and that hurt, he’s awake.

WHAT THE FUCK?!

Does MC not fear death? Is that it? Did that part of their brain just completely shut down when he killed them?!

Unlike the others, he can’t really shut down his panic. Sure, right now Cerberus is acting all cuddly, but that could change on a dime. That dog only listens to Lucifer, and right now all Lucifer is doing is staring gormlessly at it!!!

He nearly loses his hand trying to pull MC away from the creature (which it naturally did Not appreciate).

“Belphie, wait! It’s okay,” MC reassures him even as smoke blows out of Cerberus’ nostrils.

They explain their history with the hellhound, how they rescued it as a puppy and then lost it to the angry and frightened people of their village.

Belphegor can’t help but recall their expression when he told them about his imprisonment, the outrage there mingling with a much older emotion. Is that why they were so quick to help him?

He’s still wary of Cerberus. He refuses to be fooled by any facades the creature may be putting up.

But one day, MC invites him to one of their “playdates”. Cerberus watches him like a hawk, growling when he first approaches, but MC just shushes and soothes the monster until it allows him closer.

And maybe, after a few tense minutes, the pair begin to relax around each other.

And maybe, Lucifer has a picture of MC and Belphegor curled up in Cerberus’ fur as the three take a mid-afternoon nap.

And maybe, Belphegor lets him keep it.

#obey me #obey me headcanons #obey me imagines #obey me cerberus #obey me scenarios #mine #my writing #lucifer #mammon #leviathan #satan #asmodeus #beelzebub #belphegor #mc

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