Summary: What if four years before the cage was open he gets a prayer from a 2-year-old Harry Potter? When the Cage opens 4-years later, Lucifer is shocked as he hears Harry begging for help. Going to help, Lucifer takes Harry as his vessel only to discover that God had made Sam Winchester and Harry Potter his true vessels. But where Sam would hold him as he is now. Harry's soul and magic were made to heal him of the damage the mark did while his body could stabilize his grace. Weakened by the process of healing, Lucifer decides to share bodies with Harry. How would the two deal with this future?
Note: When it's just Harry or Lucifer I'll name them individually but when it's both I'll place one under italics.
Fandom: SPN, HP, Hogwarts Legacy, Freeform
He didn't know how long it had been. He could guess that it had been eons, but it was no more than a guess. Even if it hadn't been it was what it felt like to him.
The only thing that broke the silence was his demon prince's voice about 24 years ago.
Bored Lucifer freezes as he hears a whisper.
'Hello,' it came again, a little stronger than before, a little surer, ''I... I've never done this before,' the voice was young, that much he could tell, 'I... I'm Harry. My aunt took me to church today, it was the first time I went. Before she always said that freaks like me shouldn't blemish the Lord's house with our presence. But today there was no one to look after me so she had to take me. They were talking about God, angels, and praying. They said that praying is what people do when they need someone or something like that. I didn't understand, but... well, I read about you and heard them talking about you. I just... I just wanted to say that I'm sorry.''
Surprised at an apology from a mud monkey, Lucifer listens
''I know what it's like to have family that doesn't love you. I know how it hurts. I'm sorry you have to feel that.' The voice continued, leaving him completely stunned. 'Though I suppose that God still loves you, he's supposed to love everyone. But my aunt says that freaks like me can't be loved, so He may not love me, but you, I'm sure he loves you. You were only doing what you thought was right, right? That's no reason to stop loving you.''
This is how the next 4 years are spent Lucifer in the cage slowly getting prayers from a child who understands him.
In those 4 years, he felt sadness at having to kill the child which was why unconicously he decided that when he removed the humans. The Plants and Animals would need some humans to watch over them.
Thus his plan to destroy Humanity, The Monsters, the Pagans, and Demonkind changes to kill most of them but leave enough to take care of the plants and animals around the world.
After about a year, Lucifer laughs as Harry tells him stories about heroes and antiheroes like Deadpool, the Punisher, Ghost Rider, and even the Wonderful DC and Marvel Comics some of which were about him.
Liking the thought of punishing as one of his Lucifer does, Lucifer felt the desire to punish and grow inside him.
Especially with Harry's comment that at least 30% of Humanity deserves to be punished.
Hearing the thought from Harry to prove themselves to be better their his parents. Made Lucifer desire to make creation see him as a better King than God.
To make creation pick him over god.
Hearing Harry's ideas on Demons, Monsters, Pagans, and Angels Lucifer slowly changed from his desires to Harry's.
Unknown to him, Lucifer slowly started to heal.
The cage was meant to completely isolate him but Harry being an option of a true vessel and able to heal Lucifer of the Darkness and the Mark made his magic able to slip into the cage.
Which was why he was healing the magic slowly started to heal.
Enough to give him most of his mind back.
Getting his mind back was harsh as Lucifer was forced to realize how far he had gone.
Annoyed and pissed off with himself and everyone for not noticing his changes, Lucifer cursed quietly as he decides to heal himself.
Deciding that the best way to do that was to try to see if he had access to the powers of the various beings that he'd heard from Harry.
Lucifer was surprised to find he could.
Flooding himself with Light, Lucifer quietly screams in pain as Light builds up inside him burning away the darkness inside while healing the wounds he left behind.
Strangely he found out how to build himself a custom vessel but it felt wrong and quite frankly he hated the loneliness which was when he decided that no matter what he would share and that he would do whatever to aid the vessel including eating.
Of course, he'll need a way to take down Michael without killing him preferably in a way that would one day give him his brother back.
Perhaps find a way to remove Michael's grace or bind it and place him into a reincarnation cycle with the Horsemen rings just in case he gains his grace before he has learned his lesson.
Being the Void, Space, Gravity, Shape, and Matter pillar of creation the death of Michael would destabilize creation and cause alternate realities to slip through while slowly this universe decays to non-existence.
The only reason Michael was allowed to kill 2 Archangels is he's strong enough to hold up the weight of their pillars.
This is strange now that he knows he is equal to Michael but Father or someone else never let him discover the true limits of his power.
Which honestly should have been obvious as the Pillar of Light, Will, Desire, Music, and Reality.
He like his brother was able to control the constructs of creation Death, Time, Dream, Love, Life, Magic, and the many others.
Unlike his siblings who could travel time, He and Michael had control over time able to do whatever desired including creating alternate timelines permanently.
Shaking himself out of his thoughts he starts forcing himself to master each of his powers.
While training himself to fight and move in a human body.
After 2 years of learning he moved on to using the information Harry gave him to learn how to become a better king.
After about a month he stopped caring about that and decided to just be the best Lucifer.
Three years after the first time that Harry Potter spoke to him, Lucifer learned that Arazel was getting ready for his blood tournament that would begin in 3 months.
Annoyed at the loss of potential, Lucifer let out a growl and threw a ball of light at the cage which trembled and shook.
Hearing the rattling and shaking, Lucifer pauses as he notices the sigils that bind him lighting up.
Eyes flashing, He snaps up a camera that Harry spoke to him of and starts sending balls of light at the sigils and then snapping pictures at each ward.
After what must be 1000 years in the cage but about a day on earth, Lucifer stares down at the printed pictures.
Staring at each, sigil on the wall Lucifer freezes the sigil bar Archangel/Angel/Demon Power, not Pagan, Death, Horsemen, or Fae Powers.
Lucifer has created 2 more vessels these are based on Cain, Abel, and Lillith as humans.
Summoning a knife into his hand he slices and carves each carving spell into the 3 custom vessels and then in the tongue of the Elves from Lord of The Rings which came into existence with so many humans knowing them thus he knew them.
'' By the power, within me, I offer 10% of my power to claim the domains of the Valar Gods''.
Thunder rocks hell as the three bodies dissolve and he absorbs the 3 into himself granting him the powers of Eru the Singer the Valar King who sang the world into existence.
Noticing that the only ability he gained that he couldn't do with his grace was the ability to sing life into existence.
Lucifer starts using his true voice to sing a door out of the cage.
Laughing a door appears.
Noticing the door fading, Lucifer quickly opens it and bursts out of the cage will a roar of delight.
Feeling his vessel, quickly breaking apart Lucifer curses seemed he didn't completely understand how God made Humans capable of holding him.
Quickly before it was too late, Lucifer flew away from the cage flying through hell.
Knowing he only had 30 seconds at most before the vessel breaks down and he starts being pulled back to the cage he rockets to escape hell snatching 10 souls as he goes.
Bursting out of hell, Lucifer absorbs 5 souls having them reinforce his body.
The 5 souls give him about a month.
Hiding his power, Lucifer absorbs the 5 other souls to bring his power back to full as it wasn't able to recharge itself.
With a flap of his wings, he teleports straight for Harry.
Surrey, England
Appearing in the yard behind 4 Privet Drive Lucifer frowns as he feels powerful wards ones enough that even as weak as they seem to be from no love powerful enough to block full-stop up to the Earls of Hell.
Impressed at the power created by Lily Potter and then weakened considerably by Dumbledore and even further by Petunia.
Lucifer hums as he shifts into a cloud of smoke and smokes his way into the house through the smallest cracks to where he senses Harry.
Coming to a full stop inside a small cupboard, Lucifer growls as he notices the beaten and broken body of Harry.
Spreading a little of his power over Harry's body Lucifer heals it as much as he can in this body then he uses his power to create a dream world in Harry's head and then enters it.
Dream World
Appearing in a garden, Lucifer smiles as he sees Harry playing with a few children.
After waiting a few minutes, Lucifer walks over and says '' Fun isn't it''.
Pausing the scene, Lucifer waits as Harry notices turning Harry gasps as he stares at Lucifer.
After ten minutes of shifting Lucifer asks '' What"?
Harry stares at him and then whispers '' Lucifer''.
Smiling gently Lucifer nods '' Yeah, kid I heard you. Sadly, Dad locked me away''.
Harry nods and then after a moment he asks '' Are you okay?
Lucifer sighs and shakes his head '' No, I'm afraid before Dad made earth, humans, and the animals there was a battle between Father and his sister. My aunt was angry or something I could never ask but Father decided she needed to be locked away when she wouldn't stop destroying planets. So, Dad built a prison to contain her and was going to give the key to releasing to my big brother but I begged Dad to let me carry it.
In the end, he accepted the cage leaks and the only one to absorb that leakage was me.
It corrupted me and made everything worse.
What could have been anger at Father for having us love something more than him that we never met turned to rage?
The Mark damaged me and then tortured my grace and soul to turn me against everything I care about as revenge or to get released from my aunt.
When I attempted to dethrone Father, he locked me away in a cage where I've been trapped with the mark corrupting me ever since.
Face hard with sympathy and confusion, Harry asks '' Then why are you here''?
Sighing Lucifer answers'' For Eons, I was trapped in Hell listening to the worst of humanity but no contact with Earth or my siblings then I felt your magic and heard your prayer''.
Gasping Harry shakes his head '' But I don't have magic. I'm Harry… just Harry''.
Lucifer smiles gently and replies '' Oh, Harry you are so much more than just Harry you are special so special that your Mom and Dad died to protect you from a great evil''.
Harry's eyes wide whispers '' What… Mom and Dad were heroes''?
Lucifer nods '' I don't know a lot about being trapped in hell as long as I was cut off from the sun but from Hell. I learned that your Parents were Wizards from an Old and Powerful Line. A Line so powerful that and Old that they fought beside the Knights of the Round Table''.
Gasping at that Harry shouts '' My family were Knights''!
Lucifer smiles and answers '' You're Family were lords who lived and fought for Equality, Justice, Tradition, Progression, and never becoming just to always strive to be better. Your Father was a Hit-Wizard… Magical Swat who fought against a Dark Lord who wanted to kill those like your Mother and those like you and the wonderful creatures of magic. Your Mother lived and breathed the secrets of magic always trying to expand her knowledge and skills. She was well known by her enemies for being able to lead the forces of the dark lord to ruins. Your Mother was a Spy and Researcher. She made powerful spells and potions to help her friends. And you are the child of that Family. Believe me, Harry you are special''.
Crying, Harry alights with the determination to be worthy of his true family after a few moments he notices that Lucifer is grimacing he asks '' What is it''?
Lucifer answers'' I escape the cage, Harry because I sense your soul breaking but if I'm unable to claim a vessel powerful enough to hold me I'll be forced back''.
Panicky Harry asks '' Where can we find a vessel''?
Lucifer after looking at Harry's stun replies '' There are 7 Vessels that can contain my power for a month only 4 can hold me a year. Only 3 can hold me until the sigils that would force me back are broken. And only 2 can me indefinitely''.
Harry orders '' Where go to one''!
Lucifer smiles as he says '' I have''.
Jaw-dropping Harry asks '' Me''?
Lucifer answers '' Yes, when Dad created Humanity he made rules that Higher and lower beings needed physical form to interact with the world beyond prayer. Archangels through are different we… okay picture a round table. That table needs legs. Archangels are the Legs while Creation is the table''.
Harry understood and whispered'' And you need something capable of holding the leg''.
Nodding Lucifer answers '' So, when Dad created Humans and made the laws he had us Archangels place a bit of our essence into a few souls. Those Souls are what allows the body to hold us. If they both are in their correct space we can't be contained. Of course, due to a few magic or runes other bodies have been made capable of holding for a time but they weakened us.
For me when I did I chose to put a bit of me in you.
At least, I did while I could think while I was…Drugged I chose to place a bit of my corruption into that soul that's why that soul and body can contain me. But he can only me if I was corrupted, willing to be corrupted again, or if I was strong enough to purge the corrupted piece.
But I'm hurt Harry… you can heal me will you let me in''.
Thinking Harry asks '' Can you bring my family back''?
Lucifer answers '' I can, but Harry your family is in Heaven a land of happiness and peace if I bring them back they may not be happy''.
Pouting Harry's head bows when Lucifer says '' Plus, they been dead for so long that to bring them back would mess with the magic that was taken by the family magic''.
Confused Harry looks up to Lucifer who frowning answers '' Family Magic is… well the magic of a family….sorry I'm not good at explaining magic that's more those with the domain of Magic duties''.
Sighing Harry asks '' What would you do if I agreed"?
Lucifer answers '' For now, I would heal properly and punish a few who deserve it like Petunia and her Husband. Maybe play pranks. Oh, and I would deal with Hell and make certain I can survive against my brothers''.
Thinking Harry nods'' Okay, I'll help you''.
Laughing a big smile comes to Lucifer's face and he asks'' Can I come home''?
Harry grinning at the thought of home answers '' Yes''!
Earth
The Cupboard lit up as Lucifer entered Harry.
Instantly he destroyed the horcrux in his heart adding the magic and memories to Harry.
But locking the memories away so they don't affect Harry.
Once he healed Harry, Lucifer sent his grace through Harry healing his wounds and bringing his body to where it should be.
Feeling fatigued and weak surprisingly quickly Lucifer snapped his fingers increasing the size of the cupboard to a bedroom with enough space for a King-size bed, a Desk, A case filled with Books from the local library that his grace copied, and a small bathroom with a small toilet and shower.
To the side of the door, there was a small stove and a fridge filled with food and drink.
The Door glows as Lucifer places notice-me-not wards on the door save for the weekdays where the moment they awaken the thought of making food for Harry would appear and then take them to school.
Snapping his fingers again Lucifer strengthened the wards to the point they could stop an army of archdemons and then binds them to the lifeforce of Petunia Evans and Vernon Dursley.
Yawning, Lucifer drags himself to the bed lays himself down, and falls asleep.
The Next Morning
Feeling himself, slowly pulled to awake Harry whimpers not wanting to leave the warm and safe feeling he was feeling but to no avail.
Groaning in misery knowing that he would be in pain again, he pauses in his movement as he feels good.
No pain at all and he was warm and on the softest surface.
Eyes snapping open, Harry laughs as he sits right up only to see everything was how he watched Lucifer make them the previous night.
Laughing more, Harry felt the grace inside him pausing Harry felt the overwhelming pain that Lucifer was in.
Feeling an odd warmth deeper inside him, he pulled that warmth over Lucifer who groaned quietly and fell into a deeper sleep.
Knowing that at best Lucifer would awaken if he asked or was in danger, Harry sighed sadly but he knew his best friend was hurt and needed to heal.
Knowing what Lucifer did for him, Harry slowly got up from the bed stumbling as he wasn't used to his body.
Looking around, Harry pauses as he notices he doesn't need glasses anymore.
Stunned Harry lets out a laugh which turns into crying as he realizes the Dursleys couldn't hear him and that he was finally safe.
After an hour of crying, he stops and takes a look around his room for anything that he doesn't notice.
Pausing after looking he noticed a chest.
Walking over curious he opens only to laugh seems Lucifer had resized Dudley's old hand-me-downs to fit him and look new.
Hearing his stomach, grumbling Harry followed his instincts as he walked over to the small kitchen and made a huge breakfast.
After eating enough for the entire Dursley clan, Harry did the dishes and then headed over to the chest grabbed a change of clothes, and entered the shower.
Seeing a Wash and Drier machine, and towels Harry laughs as he enters the standing shower and cleans himself.
After using everything and drying himself, Harry murmurs '' I should probably figure out how to gain Voldemort's memories''.
Heading over to his bookcase, Harry grabs fifty books on the mind and emotions.
Getting back to his bed, Harry goes to sit when Lucifer briefly wakes up and whispers '' Harry, you should call on the Potter House Elves to take care of you. Oh, and as much as we both want you to leave the wards are this place and your mother's protection would make this house the best and safest place for you until you turn 11. I should be able to upgrade the wards on your other properties by then. Also, ask your elves to send you to Gringotts and get an Inheritance test and ability test, and ask for healers to give you an exam.
Once that's done, I would hire protectors and tutors along with Proxies. You are an underage lord. You need to be properly represented''.
Listening to everything, Harry felt Lucifer keeping him calm allowing him to calmly ask'' What about revenge''?
'' If you gain, Voldemort's Memories I can access your Genetic Memories to allow you to remember the lives of your ancestors on both sides of your family. Your Father was a great prankster and a few of your ancestors on your father and mother's side would allow your revenge in the best possible ways. For now, I suggest you go after the Dursleys' desire to Normalize and destroy them turning them into criminals and breaking them.
If done, right you can get Vernon arrested and quietly killed in jail while getting Dudley removed to a good house who if you allow me I can make him loyal to you.
Petunia sadly is needed unless you can find a second or third cousin on your mother's side but only for the blood wards. Once you gain their memories they will tell you how to destroy Petunia in a way that you can stay until 11 while also destroying her life.
Oh, if you can ask the Goblins for a Family Tree and Family Portrait done for each of your Lines. Then ask them if you have someone on your mother's side to care for you. If they do ask them if they can move the blood wards to wherever your new guardian and yourself decide to stay. In which case, plan on destroying Petunia and I will have Hellhounds rip her apart and have both of them placed on the racks for eternity''.
Eyes alight, Harry calls out '' Will Potter Elves appear''!
POP!
'' MASTER HARRY''! A Elf wearing a Suit calls out staring at the elf, Harry is momentarily stunned when the elf seeing it misunderstands and explains '' The Potter family has 3000 House Elves, but it was decided that I shall be your elf and to not overwhelm you that I can act as ambassador''.
Drawing on Lucifer, Harry clearly and strongly says '' Good elf, first tell me your name and then take me to Gringotts, once we are done for the day tell the Elves they were right to do so warn them that it's possible that they will not take care of me until I'm 11''.
Bowing the House Elf proudly says '' I am Caesar, I am the Personal Elf of the Potter Heir and I can Cook, Clean, Bodyguard, heal, and even perform acts of magic for said heir, and your desire is my will''.
Satisfied, Harry says '' I have lunch ready by 12:30 and please get my attention so that I can eat. But while you're waiting please get me an appointment with the goblins. Oh, and since you need money to pay for their services turn yourself invisible and rob people who collect stacks of money with weapons in their hands''.
Confused Caesar replies '' I don't know what Muggles consider weapons''.
Understanding Harry orders '' On, my bookshelf there is a weapons and criminal page look through both and then rob those that look like the head boss of Drug Dealers''.
Nodding Caesar walks over to the large bookshelf grabs a few books and starts reading.
Settling into his bed, Harry spent the next 5 hours reading books on the Mind.
Finishing a book, Harry is startled as Caesar says '' Master, you're food is ready''.
Looking up, Harry smiles as not only is there food on a small table but on his desk, there is 100,000 £( 125,366.22$) more than enough to be traded in for services needed.
Walking over to the table, I'm stopped as Caesar says'' Account Manager Whitehook the Potter Family Acocunt Manager has agreed to see you, and if you're proven to be Harry Potter place the money into your trust vault. Your Appointment is at 1:30''.
Relieve Harry took a sit and started to eat.
Finishing his meal, he looks deep in himself frowning as he realizes that Lucifer won't be waking up again for the rest of the month unless needed.
Sad Harry hesitantly orders '' Alright, Caesar take me to Gringotts''.