Mc and Mephisto walking around RAD
Demon: Hey Mc thanks for helping me with the job the other day!!!
Mc: You're welcome! If you need help again let me know.
Demoness: Mc, the song you recommended was awesome, come by the club soon!!!
Mc: I'll drop by there sometime.
Mephisto: It never ceases to amaze me how well you've integrated into Devildom despite being a human.
Mc: Well I grew up hearing that I was going to hell for this or for that. So let's just say I had my mind made up *sticks thumbs up*
Mephisto: What-
Mc: What I didn't expect was that this moment would come so quickly :D.
Mephisto: *covering his mouth with worry* I don't have words to refute that… But good for you… I guess.
.
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Solomon who gives off raw humanity after you actually get to know him. He's just a lovesick, scarily powerful, fool. He'll sit there for hours and ramble about magic and TSL and pacts and his work to you if you let him. Ask him about his star obsession, urge him to tell you stories about his travels and findings and adventures. But please, please remember that he's more than just some immortal sorcerer capable of great things, hold him from time to time, sit and just exist with him, please.
Let Solomon be human with you. He's so used to carrying the weight of humanity on his shoulders, sometimes he forgets he's only human, too. He might be fun and he might be strong and he might be wise, but it's been too long since he's had someone hold his hand and glide their thumb over his knuckles.
Please let him ramble about the rain or the way trees creak or the way stars twinkle like they're laughing. Please let him take you to different places and get excited with you over things he's purposefully never sought the answer to in order to keep a part of himself curious. Please sit with him in the silence of each other and just let him let his guard down.
Solomon who wants to be human with you. Solomon who is human with you.
Musings
Humans have more endurance/Stamina and flexibility and general hardiness than either Angels or Demons. Sure Angels and Demons are super fast, super strong and magic, but I think the average human walking could outdistance a demon walking at the same pace. (Humans are pursuit predators after all)
As for hardiness, yeah humans are easy to kill - however, if they don’t die they survive a whole hell of a lot, some of which would actually kill a demon)
IE Humans can survive losing limbs but its basically fatal to demons and angels. Humans can also get their limbs re-attached, but once a Demon or Angel looses a limb, it’s pretty much gone except in the most ideal of circumstances. (Their physiology makes it extremely complex and difficult, magic or otherwise to reattach)
This is mostly going to be about Demon reactions, because I think that Angels have either had enough exposure that they’re chill about it, or they’re able to keep their composure. Luke may be taken aback at first, but after you and Simeon explain that humans can just do that, he thinks it’s cool!
Headcannons for this are the Human introducing Just Dance or something and just winning by default bc no one else can do the moves, even if the MC has limited mobility or strength. Or them doing super mundane things like reaching behind them or twisting their back to look over. I also think Humans have more fluid motion than Angels or Demons bc of the flexibility and also bc we are full of fluid lol. Not necessarily graceful - just fluid. I also think we have a winder range of motion in general, like our joints
This is a continuation of the flexibility thing - Levi may stream occasionally and one time the MC was on the stream (accidentally or invited ect) and they give Levi a thumbs up and the chat and Levi absolutely lose their minds (doubly so for a hitchhikers thumb) because Demons don’t have as wide a range of motion.
MC like twists in their seat to look at Barbatos one day while at the Demon Castle and Diavolo panics inside and almost instinctually casts some healing magic - but MC seems fine? Oh! Interesting, he’d like to learn more.
Satan and MC go on a walk one day and by the end of the walk Satan is astounded at how much stamina humans have. His usual walk (one that tires him out reliably) didn’t have as much of an effect.
This would still happen if the MC needed mobility aids too, and might not happen with walking but would happen with other things. They might be able to work with their hands for longer or something similar.
If the MC is an athlete, I don’t think they would be able to outspeed anybody at all but I do think that them being able to outdistance people is a thing. Like they run with Beel one time and though Beel is way faster, after a few loops or after the route is finished he’s unable to go any more, but the MC can still run. (I think out of the brothers, Levi and Beel have the most stamina, I also think Levi is the fastest swimmer, and Asmo is the most flexible)
One day Lucifer comes home to MC lying upside -down on the couch, their spine bent backwards, their head close to the ground, and their legs over the back - and he let out the most high pitched shriek MC had ever heard. They were just chilling, stretching a bit, really.
Belphegor loves how flexible MC is and how they’re built. It’s comfy and he can experience cuddles in new ways. Plus it’s fun to see the others freak out when the MC does things, though sometimes he’s…unnerved to say the least.
Asmo delights in watching how MC moves, and not just in a lustful way. He loves to watch you and notice little things about you.
Beel likes to move with you - walking, running, swimming, dancing, even handiwork, he likes to do it with you. Its a way for him to connect with you in a special way, doing physical activity together. (Not just sports and athletics but like, literally anything)
Satan is fascinated by new things, and wants to learn. This means, that he’s fascinated by and wants to learn about you! In any way possible. He thinks the way you move is super fascinating, doubly so because it’s you. He’ll ask you do do certain movements and tricks with your body in order to a) learn more about you (and humans in general, but mostly you) and b) see you move in fun ways. Additionally - this has some potential for the anti-Lucifer League
Levi is honestly in awe of how dexterous you are - even if the mc has limited mobility in their hands, you can still do some things with the buttons on the controller that he just cannot do. (Like, he can do normal videogaming motions, but he can’t do ones humans can that involve stretching their hands out, or curling their fingers to hit some buttons) It fills him with awe, and at first he’s full of envy, but then things change. He’ll watch you playing, and sometimes might ask for help if he’s having trouble with some maneuvers
Mammon straight up uses you as a distraction, but also it backfires because it distracts him as well. RIP his schemes
Barbatos is thoroughly amused, both in the reactions of others and in the things you do to illicit those reactions,
Note: these are purely my headcanons at the moment, they are based on animal ethology and behaviours that I think would suit each character depending on their personality and Lore. I would love to read your headcanon in case you have them.
Warning: Long text. Possible grammatical errors. It's written as if Mc was writing for themself.
Hey, it me Mc, the best human. Here is a compilation of the behaviours of my demons during their periods, cycles, for practical day to day use. It wasn't easy but I sat them down and got to talk to them, with a little effort I now know what they need. So now I am ready to assist them during these complicated times and be prepared in case I find a dead goat on the porch as a tribute.
Lucifer, Mammon & Levi || Satan, Asmo, & Beel || Belphie, Barbatos & Diavolo || Simeon & Raphael
Belphie
It could be said that he is the one that best keeps his schedule.
During his period he still sleeps a lot, the only difference is that he has short periods of high activity.
He can stand the light well. In fact, he will often ask you for a spell that simulates sunlight to sleep under.
During his cycle, most of Belphie's body is covered with soft fur, although some parts of his body such as the end of his tail or chest is a denser fur (perfect for sleeping) where spotted patterns can be seen.
His horns and ‘claws” harden and his pupils become horizontal (Little cow boy).
He sheds a lot of hair and his claws grow, but he is too lazy to groom himself. So wherever he is there will be fur everywhere.
To get him to groom himself, you will have to tell him that you will help. Sometimes, he strokes you simulating the action of brushing the fur (so I think that if he wasn't the avatar of sloth he would groom his companion).
Belphie does not build a nest as such, but rather a kind of fort with all kinds of blankets, pillows or stuffed animals, he steals them from his siblings to feel safe, although he won't admit it.
He usually does it in the attic to be quiet, although your room is also one of his favourite options.
Belphie becomes possessive and somewhat capricious, he won't be shy about asking you to spoil and pamper him. Lucifer says he is always like this but it has gotten worse since you offered to help.
Before his period, Belphie will go a couple of days without sleep, which makes him very irritable. Is this the equivalent of hormones?
During his period Belphie's appetite neither increases nor decreases, but he needs to change his diet to high-energy items because of his periods of activity.
He will want you to feed him but he will not feed you.
Belphie can talk, although slower than normal. He will communicate most things to you with puppy calf eyes. He knows how to use his weapons, sly cow.
He produces pheromones and marks everything with them, without you noticing.
This pheromones are not very strong but have a unique scent. He is a bully and sometimes goes around the house spreading them to annoy his siblings.
Belphie likes you to always be rubbing him, in any moment, always looking after him. He gets very touchy.
One thing he will do a lot is lick and bite you gently. Sometimes he expects you to lick him back, my tongue is not ready for that Belphie.
Belphie's courtship consists of little taps to get your attention and release a special kind of pheromones, if you stay close to him he will consider the courtship a success and proceed to groom you insistently (so he can do it >:v)
You can be a bit naughty and get up, just to give it back to him, but come back quickly or he will cry.
The sense that develops the most during hir cycle is his smell, mostly to detect the presence of other people nearby.
His temperature rises a lot, but he won't give up blankets and other warm things. Prepare ice packs for you, not for him.
Belphie's purr is not very loud, it's more of a chest vibration, he's super cute when he purrs, but don't feed his ego.
He doesn't mind everyone knowing he's on his period and will make it everyone's problem.
Belphie: Mc… Mccccccc!
Mc: *worried* What's wrong?!
Belphie: *stretching his arms out* I'm on my periodooo, cuddle me.
Mc: *stifling laughter* Why should I?
Belphie: Eeeeh? *pouting* I'm on my period and you're not going to spoil me? How cruel.
Mc: *cuddling up next to him* You're such a spoiled brat.
Belphie: *cuddling up against them* Yeah, yeah, whatever you say *smiling*.
Belphie: *sleeping with hs shirt pulled up*
Mc: *observing the spots on his fur* Humm *drawing the shapes of the spots with their finger*
Belphie: *shrinking back*
Mc: Soft…
Belphie: *balling himself up into a ball* It tickles..
Mc: *smiling* A cute little cow with a cute little coat~
Belphie: *blushing still in his sleep* Stop…
Belphie: *courting Mc*
Mc: *getting up to go get something, without noticing it*
Belphie: …*his eyes fill up with tears*
Mc: Belphie??!!!
Belphie: Do you still love me?
Mc: Of course I love you,
Belphie: Then don't ever do that again… *biting their arm*
Mc: Ouch
Diavolo
Get ready to go underground. Diavolo nests in a cavern. There is a large underground cavern under the palace for this precise purpose.
Diavolo can go through his entire cycle without sleeping, but likes to do it, curled up in his nest just for the fun of it.
He can tolerate light, but only if strictly necessary.
You can find out a lot about Diavolos' period because the cycles of the royal are well documented.
Diavolo's scales harden and although black, they glow golden in the light and the golden scales double in size.
His pupils tear he's such a big lizar. And ornamental patterns are spread all over the skin.
Diavolo's grooming is complex and laborious, at first he didn't want to, but now he is the one asking for your help.
The scales on the wings, body and tail moult almost every day and it is advisable to keep his skin moisturised. If it gets too dry its can crack.
He needs to sharpen its claws and teeth, usually against rock walls.
Diavolo nests in its cavern, always high up, never close to the ground (you won't be able to get out of it without help).
This nest is surrounded by all kinds of treasures did you think the riches of the kings of Devildom were in the palace? No, most of it is in the cavern, accumulated generation after generation.
Very territorial, during his period almost all the employees of the palace must leave him. Also his sense of protection is increased, he will not leave you alone, he will not.
Diavolo's pre-heat consists of very constant feverish moments. But it is easy to detect that the cycle is approaching because of Barbatos.
During his period his appetite and voracity increase, he needs to hunt often, animals and beasts, but also souls trying to escape from the Devildom among other things (he takes the opportunity to go hunting when you sleep).
He will try to feed you, mouth to mouth, but seeing that it don't work, he will switch to giving you small pieces.
Diavolo in his demonic form can generate fire, not only with his magic. Because of your reluctance to eat raw food he started to ‘cook’ it with this fire.
Can speak on very specific occasions, the rest of the time he is non-verbal. His growls are literally demonic, sometimes it scares you and it is very sad to see his expression of guilt :(
As royalty, Diavolo has one of the strongest pheromones in Devildom, many demons are sickened by them (Ha, human insensitivity mode on), he consciously marks everything, especially his mate.
The only way to calm the dragon is direct physical contact, stroking its complex ornaments and wing membranes with your fingers It's like a game to be honest
Press on the muscles of its wings and neck and you will have it completely entranced. He has spent a lot of time alone during his periods and is in need of contact. Initiate physical contact and it will be pure happiness.
And most importantly, show reassurance, it makes him feel insecure to think that you are there against your will.
Diavolo's courtship is a ritual. First it will show off its grandeur by lighting up its scales and perform a nuptial flight where it will display its wings and ornaments.
After this he will look for the rarest prey to give them to you (the day he brought you a baby unicornia you almost fainted, thanks to Barbatos, you were able to get the baby out of there). Finally, he will try to dress you up with all kinds of treasures and jewels to ‘be a couple’.
All his senses are heightened, especially sight and smell.
There is a rumour that he sees everything that happens in Devildom. Which is a lie because you've seen him run into a wall when he's looking beyond it.
Diavolo's temperature increases a lot, despite the coldness of the cave (You slept on his chest because he's super warm? Yes, That from then on he always wanted you to sleep on top of him? Also).
Diavolo's purr is deep and loud. It will resonate throughout the cave, and will usually purr when you are paying attention to him.
Diavolo: *clearly worried*
Mc: *caressing his scales* What's wrong?
Diavolo: Mmmm *looking around*
Mc: *sighing* I'll tell you again, I'm here because I want to, because I want to take care of you, is that so hard to believe?
Diavolo: wrapping them in his wings Thank you…
Mc: *returning the hug* Anytime.
Diavolo: *placing a pearl necklace on their head*
Mc: *sitting on his lap* Dia...
Diavolo: *placing several precious stones on their chest *
Mc: Diavolo, dear.
Diavolo: *holding up a golden tiara to put on them*
Mc: *filled from head to toe with treasures* Diavolo, this is too heavy, it doesn't- stop, please.
Mc: *caressing a fairy that Diavolo has brought them as food*
Diavolo: *staring at the fairy*
Mc: Don't even think about it, if you burn the fairy, I'm out of here.
Diavolo: * indignant dragon sounds *
Mc: It's true... I can't leave here without you, but if you touch the fairy I'll get angry.
The fairy: *about to have a heart attack*
Barbatos
He doesn't sleep during his cycle, no matter how much you bowel, no matter how much you insist, he won't sleep. It is normal to wake up and find him watching you with his eyes wide open.
Light hurts him, during his period his skin becomes sensitive and burns very easily.
Barbatos' skin becomes very pale with a mucous covering. His tail elongates and ridges appear on his back, forearms and legs.
His horns also develop a membrane between their branches.
Its pupils lighten to the point of seeming to disappear, but then return to colour when it is alert. Sometimes you get the sensation that he stops blinking.
To groom himself, barbatos needs a lot of water. During his cycle he will create all kinds of water springs, (he is one of the few demons who can consciously use his powers).
He's not a big fan of you helping him or watching him, he doesn't consider his appearance the most pleasant for a human.
He usually nests in his room, but sometimes opens portals to hidden parts of Devildom or even the human world, the latter more so since you started helping him. He creates a burrow, underground or among roots.
Although he occasionally goes out, he prefers to stay in his den.
Barbatos is dangerous, and possessive, he prefers loneliness with the sole exception of his mate, he is not territorial, I think because no one in their right mind would go near Barbatos during his period.
During his period Barbatos gets headaches, because he sometimes loses control of his powers and timelines overlap in his mind. The only thing you can do in these cases is stay by his side and comfort him :(.
Barbatos doesn't seem to need food. But for pleasure he sometimes devours curious prey (souls, blood of mystical creatures, cursed plants...).
He can talk without any problems, but he doesn't talk much. He prefers to attract attention with caresses or small bites. It is easy to interpret his silences.
During his period, Barbatos generates a lot of pheromones but does not mark. He has no sense of territory and prefers to stay close to his mate all day to avoid others approaching.
At the beginning of the period he will be reluctant to physical contact, he'll keep his distance, partly because of his appearance and partly because of fear of his behaviour. But little by little he will ask for more contact.
Don't touch him if he doesn't ask for it and make sure your hands are always wet or cold because even if he seeks your warmth, the normal temperature of a human could overwhelm him. Good thing we know magic, thanks Solomon.
Barbatos' courtship consists of a kind of lullaby, a humming, in which his skin glows slightly in a beautiful colour, quite frankly it is very mystical and magical. If it sees that you don't get disturbed it will hug you and swim with you for a long time (use magic, use it, or it will give you hypothermia).
Barbatos' senses are completely heightened, nothing escapes his awareness, but this is detrimental because very loud sounds, light or even physical contact can harm him. There are far more stimuli than millennia ago so this is yet another reason to isolate himself.
His temperature drops drastically, but he doesn't seem to have any problems with it.
Barbatos' purring is almost inaudible, you have to be very close to hear it. But it is quite easy for him to purr even though you won't notice it.
Barbatos is feeling quite vulnerable because he hasn't had his period for centuries so he is unfamiliar with his own reactions, and feels lost, although he will never admit it.
Give him confidence, by now, you are a master in demon periods.
Mc: Barbatos, my dear *peeling an apple*
Barbatos: *cuddling on Mc's lap* Hum?
Mc: Is there a reason why you chose one of the most remote places in the human world to spend your period?
Barbatos: … no
Mc: It's not so the brothers can't find me, is it?
Barbatos: … no…
Mc: *stifling laughter* Okay.
Mc: *gently stroking his back* How are you feeling?
Barbatos: *laying down next to them* It… hurts...
Mc: I'm sorry I can't help you *gently pouring water on his forehead.
Barbatos: You're here… that's more than well enough.
Mc: Give me some time and I'll find a way to calm those migraines.
Barbatos: *smiling* I'm sure you will….
Barbatos: I have to say I had forgotten what it was like to live ‘a period’.
Mc: I wonder why you've had them again after so long.
Barbatos: *smiling* It's because of you
Mc: Me?
Barbatos: *shrugging theur cheeks and rubbing their forehead against his * Yes, until you came there was no one who could be my potential mate, and my body knew it. Just like it knows you're here now.
Mc: *blushing* Those words count as courting? because they're working.
If you have made it this far, thank you very much 🩷
Beel: Mc is very angry….
Lucifer: Don't worry, they'll get over it soon.
Beel: How can you be so sure?
Lucifer: *smirk* Because I've enchanted the mayonnaise so they can't open it, they'll ask us for help.
Beel: Ooooh and do you think that-
A sound of glass breaking is heard and they run over there.
Lucifer and Beel: …
Mc: *with the broken glass mayonnaise jar in one hand* …. *staring at them* …
Lucifer: …
Mc: *being a proud bastard almost as much as the avatar of pride* Hum *leaves without saying anything to them*
Beel: I guess we'll have to look for another way…
Lucifer:… Sometimes I forget why they have a pact with me.
.
I've been thinking that growing up surrounded by luxuries and being a prince, Diavolo, as the future heir of Devildom has all in his hands. And everyone around him has been reminding him of it all his life and praising him always in an ostentatious and tiresome way. Always comparing him to the greatest things, the most powerful creatures and the most valuable treasures. Feeling that the flattery is nothing more than an act of pure interest towards his person, empty words.
And then one day Mc arrives, a human who doesn't seem to understand that they are in hell, and stares at him.
Mc: Your eyes are beautifull.
Diavolo: Ha, ha, people usually say to me the look like gold-
Mc: They have the color of sun-kissed honey… Feels like home.
And then, leaves quietly, as if nothing, after dropping the bombshell, leaving Diavolo a blushing mess unable to process what just happened.
That day Barbatos found in his young lord's search history "how to marry a human, being the future king of hell?"
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