Mastering Complex Organisms

- Masterpost -

Here it is people of Tumblr, I'm gonna update this masterpost whenever there are new parts on the AUs and other stories that I post here in Tumblr. Fandoms will vary.

Danny and Damien are friends (also known as: Damian has a crush on Danny). Danny Phantom x DC comics AU

PART 1 PART 2 PART 3 PART 4 PART 5 PART 6 PART 7

PART 8 PART 9 PART 10 PART 11 PART 12 PART 13 PART 14

PART 15 PART 16 LAST PART

Dr. Danny M.D. Danny Phantom x DC comics AU

PART 1 PART 2 PART 3

Not Batman's sidekick. Danny Phantom x DC comics AU

PART 1 PART 2 PART 3 PART 4 PART 5 PART 6 PART 7 PART 8

To babysit a mafia boss. Trash of the Count's Family x Katekyo Hitman Reborn Crossover.

PART 1 PART 2 PART 3

Accidental Crime Lord/Mob Boss Danny. Danny Phantom x DC comics AU. Oneshot.

Danny is Dick and Barbara's kid. Danny Phantom x DC comics AU.

PART 1 PART 2

PROMPT: Growing Pains.

PROMPT: Pretty Witchy Danny.

PROMPT: Danny Phantom x MARVEL.

dont tease ur half-dead boyfriend, jeez

The Marriage Pact (But Make It Sabotage)

ahh tysm for 500 followers!!! i never thought so many people would actually like all my silly ideas! <3

Tim and Danny, somewhere in their early twenties, jokingly make a marriage pact: if they’re both single by the time they’re in their late twenties, they’ll just marry each other. It’s lighthearted, it’s casual—just two best friends making promises for a future they’re totally not worried about.

Except… it gets a little weird.

Danny gets set up on a blind date one Saturday. Tim, the supportive best friend he is, casually mentions there’s a case he could really use Danny’s help on. Nothing serious, of course—just something that totally can’t wait until Sunday. Danny, being the responsible friend he is, cancels the date.

Tim, meanwhile, gets roped into a coffee meetup with one of Steph’s friends. It’s not really a date, but it could turn into one. Or at least, it could’ve, if Danny hadn’t texted Tim about that new bakery he’s been dying to try. “We should go! Like, now. Before all the good pastries are gone.” Tim, naturally, reschedules the coffee meetup. After all, Danny takes priority, right?

It becomes a pattern.

Danny’s coworkers try to set him up with someone they think is his type. “Oh, sorry,” Danny says, “I already promised Tim I’d help him with his tech upgrades tonight.”

Tim gets invited to a fancy gala where he might meet someone. Danny shows up with two tickets to a concert Tim mentioned liking a month ago. “Come on, you deserve a break.”

Neither of them realizes what’s happening, at least not consciously. To them, it’s just normal. They’re best friends. Of course, they’re going to prioritize each other. Of course, they’d rather hang out together than with some random stranger. Of course, no one else really gets them the way they get each other.

Their friends, however, are losing their minds.

Steph is convinced Tim and Danny are already dating and just haven't told anyone yet. Tucker and Sam are taking bets on how long this can possibly last before one of them snaps. Cass is tempted to lock them in a room until they sort out their feelings.

The kicker? Tim and Danny both think the other one doesn’t feel the same. They’re sabotaging potential love interests out of sheer self-preservation because the idea of watching the other fall in love with someone else is unbearable. But they can’t say anything, because what if it ruins their friendship? What if the marriage pact is all they get?

So, they keep pretending it’s fine. Danny keeps canceling dates for “missions” that could definitely wait. Tim keeps skipping events to spend time with Danny.

The late twenties deadline creeps closer. Everyone else is waiting for the inevitable implosion. Tim and Danny, oblivious as ever, are just… biding their time.

Leaving Unattended

Phantom and Danny were accidentally split in an accident. The two of them end up defeating the enemy that split them but are unable to fuse back together.

Over time as they are on split Phantom gets more and more unstable mentally. Phantoms humanity is cut off majorly and turning off his powers has become harder. Phantom gets into an argument with Danny causing him to run off. 

Phantom tries to find something that he can defeat to blow off steam and finds a cult. the League of Assassins to be specific. Unfortunately due to his declining mental stability he is getting much easier to manipulate.

He ends up getting brought into the LOA due to him being convinced it was a misunderstanding. The LOA Starts as thinking about sending him on a mission after they are convinced they've brainwashed him. 

While with Danny the further he is from Phantom the more he's getting physically sick. Danny is trying to find a way to put them back together working with both Vlad and frostbite. It takes about 3 days before Danny is very worried for Phantom and goes looking for him.

He unfortunately can never find him though he continues looking and is holding out to hope that he will come back. The longer Phantom is away the further Danny gets sick eventually Danny is in and out of the hospital with something that doctors can never diagnose.

It takes about 4 months before Phantom realizes he never told Danny where he went and goes back to see him. This unfortunately gives LOA a weakness. Phantom tells Danny he is staying with some people that he's made friends with but not really telling him what they're doing.

Phantom thinks that Danny will come to the same conclusion he did. He doesn't want to get his new friends in trouble. Danny is mostly just relieved to have Phantom back. unfortunately Phantom has been very unstable for the time he's been away from Danny and gets a little protective and possessive.(can you tell where this is going)

Phantom convinces Danny to come with him to see where he's been staying after realizing that them being apart is not good for both of them. Danny is happy to figure out where he's gone and plans to leave for the weekend. He does not come back after that weekend. In other news the LOA has a new member.

DCxDP: Missing Half

Phantom gets split from his human side. It's not on purpose this time. In fact, the two were somewhat surprised when the GIW had a version of Ghost Cather and that they could set an actual trap up for him.

The only good part of their knockoff was that it couldn't trap ghosts, and they couldn't understand that it was splitting Danny and Phantom. They just assumed Danny Fenton was overshadowed.

Due to this, Fenton had to pretend to be "free," and Phantom had to flee the human world by opening a weak portal. They had a policy for this. The plan was that Phantom would wait in the ghost zone until the heat died.

The only part that wasn't planned was for one GIW agent to shoot a bazooka right as he makes a short portal close. The rocket had been coated in ectoplasm, and it was large enough to push Phantom in the chest further into the Ghost Zone.

The flight path was out of control, throwing him into neck-breaking rolls. Phantom couldn't even tell what way was up or down, just feeling the rush as multiple doors blasted past him, islands flew by, and the rocket's smoke covered his sight.

He couldn't even hear his scream above the burning flames, but he was sure he was yelling. Eventually, he could push the thing off his chest, letting it fly in more turns until it crashed against a floating mountain, blowing it to pieces. Phantom panted as he watched the debris flout into the void.

Then, he realizes one crucial thing: he has no idea where he is. Nothing looks familiar. He pats his suit down, realizing that the Infinite Map is with his human half.

He has no means of navigation, and Phantom is lost in the endless void of the afterlife. He tries to make a portal home, but his training has only just begun.

He only learned to make a portal into the zone, not out for it. Phantom can't even make a green circle appear even when he puts every ounce of will into his power. He almost passes out from the strain.

He's stuck. He's alone. Fenton is likely being wounded by both the GIW and his parents, which means help is not on the way.

It took him an hour for his panic to calm down. In that time, he was attacked three different times by overly confident ghosts who had never heard of Danny Phantom. It is obvious that this is a different picking order in this part. He's quick to establish himself at the top of it, forcing the only ghost who speaks English to tell him how to get back to Earth.

The ghost shakes and shutters but can point in a direction. It's not the right direction because he ends up on Earth in the middle of the American Revolution. Phantom flies back to the Zone only to find it has shifted to a different area again.

Other ghosts attack him again, thinking his small statue belies his power. Again, Phantom humbles them for their hubris and tells them to go through a different door to get home.

This Earth is in the middle of World War 2. Phantom leaves. He tries again and again and again.

Each new ghost he defeats, each new door he tries, each new world he finds. None of it is correct. Some aren't even Earth - the sky is red or purple. There is more than one moon. Some have beings that don't look human despite being alive.

He's nowhere near his home, and hours turn into days. Days turn into weeks. Before long, Phantom realizes he does not need food, water, or sleep. He just feels the empty hollow feeling in his chest, which is where Fenton's life should be.

Half his soul is missing. His fights get a little more violent. His grips fall to unsettling silence, and his longing for home grows with each failed world.

Word goes that Phantom, Terror of The Realms, is searching for something. Whispers and rumors spread among the dead and living alike. Worlds that got a glimpse of him remember and pass his story down generations. Sometimes, as a hero in times of need, sometimes as a monster of the dark, and other times as a myth.

They all have one thing in common, though.

Phantom does not know time moves on in each world, and his legend grows. He does not know that he shouldn't interfere when he sees something unjust or what he thinks is Fenton.

He mentions it too when the disappointment drags him down with each failure and poorly makes a portal to the Zone.

Phantom, Terror of the Realms, is searching for his other half. He is the lost soul of a lover whose soul was still in the world of the living. It's all rather romantic.

Especially to young Jon Kent, who finds Phantom's myth among his grandfather's records of their culture. He gushes about the Kryptonian love story of an ancient god to Damian.

His friend thinks it's too sweet, even with the "undefeated" part of the myth. He commissions a necklace with Phantom's symbol for Jon from a talented artist because he's a good friend no matter how grumpy he pretends to be.

Jon also takes to wearing and praying that symbol alongside his Rao prayers in an effort to connect to his lost culture. He isn't expecting that when he is praying at Wayne Manor, saying the words out loud for his friend (since Damian will never ask, but he likes to learn new things), Phantom answers.

He appears in a flash, the exact image of that Kryptonian depicted thousands of years ago. He floats above Jon with glowing green eyes voided of warmth, and frost encased most of his body but- his presence.

It feels like protection wraps up their physical forms. Jon and Damian have never felt such a rush of ecstasy and warmth. Phantom looks around, whispers under his breath, and, with one raised hand, goes through a wobbly portal.

The two children are left stunned, with only the cool ice that formed around the outline of a male body as proof that Phantom is real.

They immediately start worshiping him, praying he will protect them in combat and help them find love. Jon gets a boyfriend the following week, and Damian gets a girlfriend at the same time. The kids take this as confirmation that Phantom favors them. They spread the word among their classmates, who post it online, and somehow, kids across the nation are joining in Phantom Prayer.

Clark and Bruce are mildly alarmed their sons may have started a cult.

They are more alarmed when Phantom returns, claiming he needs to rest before continuing his search. He fears losing his humanity and wants to be around humans to keep "Dan" at bay.

Jon and Damian offer their homes to the deity without question. No matter what the Justice League founders try, they can't get Phantom out of their houses.

They hope the god finds his other half soon.

Deaged Danny. Except he isn’t found by the Batfam, he’s found by Barry Allen. Barry finds this black haired blue eyed toddler scaling the side of a building like Spiderman and saves the child, who then turns invisible in his hands in an attempt to escape. (Danny forgot about intangibility) Barry now has a meta son and nobody can pry him from his hands.

Master of Masterposts

Masterpost for my DP/DC AU's

Multi-Post: Lucky Rush Haunting of Masters Manor Mastering Complex Organisms Halfa The Problem A Royal Flush Messy Misunderstandings Phantom of Love Evil Intentions Can't Love An Anchor The Time Winder

Author's Art: Pearl Haunted Pitch The Phantom Family Pitch Pearl Cuddles Big Sister Loves You Brother My Brother Danny Portrait Lucky Rush Magical Boy Phantom Halfa The Problem OC: Silent

Oneshots: Sadako Coded That's MY Mom >:O Boy Mom The Void of Space; A Vast Expanse Vlad Justifying The Great Escape Reunion Another Side of Me Is It Really a Misunderstanding? Gossip Ghost Broken Trio Spare Parts Haunted Channel A Family Haunted College Application No Good Deed

Abandoned: Two Houses, Alike in Dignity Haunted or Blessed? Clone Crimes A Problem Shared is Halved

Idea Thread: Reveal Gone Wrong Baby Boy Dan More Misunderstandings about Teen Dad Danny Fusion Halfa Lore Mini Phantom The Last Unicorn Prank Fusion Fission Self Comfort Aquatic Transformation The First Shock Clone Danny A Soul Sucking Experience Clockwork's Fanwork Haunting Photos Gatekeeper The Voice of Amity Feral Casper High Vlad Outs Himself and Everyone Else Isekai Idea Ghost Culture Shock Sailor Moon Lover Danamaniacs Batdad Ultimate Enemy Revealed GIW Growth and Decay Perfectly Normal Family Altered Right but Wrong Wrong Wrong Slipping Through Liminal Spaces The Ecto Cutoff War of Echoes

Ao3 Versions: Lucky Rush The Haunting of Masters Manor Phantom of Love Evil Intentions Complex Organisms A Family Haunted Tube Travel A Shift in Worldview A Deadly Seed That's MY Mom Sadako Coded Boy Mom Halfa The Problem I'm Half of a Whole A Royal Flush Can't Love An Anchor

This post has all the masterposts for my multipost ideas/fics. If anyone wants to use these ideas just be sure to tag me in whatever you create! 🧡

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♡ masterlist ♡

all of my prompts can be found here!!

updated on 1/3/25

tim drake :

tim leaves the bats , silent rebellion , a haunted hero , athena's soldier , you can't outrun the gods , tim drake turns 18 , tim drake is danny fenton , the camera crisis , the immortal weight , heartthrob conspiracy , heartthrob with loser rizz , always the almost , the reluctant savior , buried beneath laughter , accidentally taking over the world , the making of joker junior , nail artist by night , the day gotham let him go

tim drake and others :

the forgotten robins , the ultimate problem solvers , the underrated duo , tim and damian bond over pancakes , bonding over pancakes pt.2 , dad of chaos and protector of twins , tim drake is a fenton pt.1 , tim drake is a fenton pt.2 , tim drake is a fenton pt.3 , tim and danny as frozen , tim's most unhinged power move , unwilling favorite brothers , between healing and fear , finding their place , damian believes tim , shared custody with a rogue , tim gets adopted by green arrow , everyone wants to be the favorite , jason todd: dad mode activated , resident alley cat , christmas list tradition

brain dead :

tim loves like odysseus , eternal bonds , obsession meets devotion , famous danny and his secret boyfriend , gotham's most feared power couple , unspoken bonds , campus couple: football edition , campus couple: cheerleader edition , danny has fangs—tim's obsessed , tim drake turns 18, brain dead version , red hood vs. red robin, a boyfriend's dilemma , tim drake responds to thirst tweets , everyone wants to be danny's favorite , falling for the one you can't have , two lost souls , the makeup stream , from vigilante to royalty , ra's and his matchmaking skills , letters in green ink , first thanksgiving , tim moves to amity park , love and obsession , the weight of protection , a love that hurts , everyone knows they're dating , take my heart, take my name , the marriage pact , doomed together, doomed apart , tim doesn't believe in ghosts , tim drake is a halfa , what could have been , sleep-deprived tim , what they have, what they'll always be

batfam :

jason's lost voice , damian's favorite movie , duke isn't the normal one , october shenanigans , the bats go to hamilton , damian's LPS collection , halloween special

others :

percy and his technology curse

Fish Are Friends Not Abominations

The entire Justice League have been on edge lately watching as a giant creature the size of planet dart around the Milky Way galaxy in an almost panicked state. Despite it's very appearent size it hasn't done anything harmful, passing through planets and stars with intangibility.

Constantine on the other hand was freaking the fuck out. There was a giant realms being with a crazy amount of power searching for something and it felt like the universe itself was holding its breath. He was honestly at his witts end when he felt it.

"YOU! What do you have?" He stopped his pacing to look at Batman's traffic light child.

"That's none of your concern." Robin snapped back.

"Robin." Batman's voice cut through their little conversation. By now every JL memeber was watching them.

"It's nothing–"

"Oh yes it is, now let me see it."

As if on que a tiny glowing humanoid creature popped into view ontop of Robin's head cooing and making warbled noises.

Constantine paled.

Robin took the being from his head and held it in his arms, pulling out a batarang and giving it to the thing which then began to bite it.

"Robin." Batman started, voice firm but sounding tired.

"This one found me first." He countered.

"It doesn't matter how you found it, we need to–" Constantine's words were cut off as the large creature released a noise that sounded almost like a whale but something like warbled speech mixed into it. What happened next sent his heartbeat into a marathon and his stomach to a deep trench.

Robin's little creature stopped chewing on its toy and responded with a cry of its own.

Welp they were fucked now.

The large creature's head snapped to their direction, eyes directly on the watchtower as if it could perfectly see them from such a distance and sped towards their location.

Dp x Spiderman x DC prompt

"Danny Phantom and Peter Parker Aka Spiderman are sent to the DC universe and they will make that everyone's problem."

For whatever reason, whether to protect him, because he loves chaos, or just because he was bored, Clockwork sends Danny to another universe even if Danny doesn't agree with it. Anyway, now Danny is stuck in the DC universe, and he's drawn to a city dripping with ectoplasm and crime, and looking for a way to get home or whatever Clockwork wants him to do, Danny heads to Gotham City.

At the same time in another universe, as a last resort and to protect his universe and his loved ones, Spider-Man, Peter Parker is erased from everyone's minds and his world, so he is sent as a last act of kindness and gratitud from Doctor Strange to another universe so he can start over. So Peter awakes in another universe and new world, one where super heroes exist but no person he knows has ever existed and where there are no records of his own existence, and to make matters worse, he's 14 now and he's in a city infested with criminals, villains and pollution. Seriously, not even New York is this bad.

Looking around for how to survive, a place to stay and how to get home, Peter's spider sense alerts him of a powerful presence approaching, and Danny flying through the city while invisible is paralyzed in mid-air when a boy wearing a suit under an oversized coat looks directly at him, as if he could really know he's there, and after hesitating for a couple of seconds he becomes tangible and the other boy's eyes widen comically in surprise, and they both take a defensive stance. They have a staring standoff for a couple of minutes in which they determine whether or not the other is a threat, and when that is resolved, Danny and Peter meet. Quickly after an exchange of information, they discover that they have a lot in common, they're both young heroes, with more responsibilities and power than they could ever expect, underestimated and misunderstood teenagers, geeks, with a similar humor, show true interest in each other's tastes, and are stuck in another universe with no way to return home, oh and they share the same principles and morals, so naturally they become best friends and decide to survive together.

Danny really likes Peter Aka Spiderman, it's the first time he's met someone in his age range who really understands what he's going through. But that's not just why he likes him, Peter is funny, smart, kind, sweet and genuinely a good person, and a kid, one who in his short years of life has already been through too much, (they did trauma dump on each other) and Danny and his ever-evolving ghost core who is now obsessed with protecting children, wants Peter safe and happy, and by their side, so considering that Peter's universe and the people in it no longer existe for him, they both emerge with a plan, they are going to stay together in this universe for now and then find a way to leave together to Danny's universe, and for that they come up with the idea of ​​building a portal. They trust that they can do it, they're smart and have enough knowledge to maybe and by putting both brains together, they can decipher travel between universes, or at least to the ghost zone. But for that they need equipment, tools, materials and a safe place to stay and be able to start working, and with an established plan, their journey begins.

They find an old building, house, warehouse (it doesn't really matter) and they take it as their new home, and it's perfect, it's in fairly good shape, it's safe and secluded enough that no one will bother them while they work, it's away from most of the criminal gangs, gang territories, and off the territory and radar of the local vigilantes, vigilantes that Danny and Peter were quickly aware of dominate the streets of Gotham, and don't accept people with superhuman abilities on them. They still have to go out into the streets to get supplies and materials to build the portal, and because being two young superheroes they can't help but fight crime for a long time, and in fact they make a good team. Who would think their skills would work so well combined? (I did. I actually thought about it quite a bit, and I could have a whole conversation on this topic alone.)

There are two new vigilantes in Gotham and they are metas, that's what everyone talks about in the streets, and it's what the bats and birds have seen, and they are concern. These meta vigilantes don't seem remotely affected by Batman's rule of no metas in Gotham, but that's not what's relevant to the Bat and the Bat Kids, it's how young they are, not much older than Damian or Tim, with flashy uniforms and even flashier powers, if not dangerous, they're reckless, and their origins and reasons for being in Gotham are unknown. They know that they must approach this situation delicately, if they don't want it to get out of hand. And since they are in the streets and seem friendly, the bats try to get closer and get information, they try on different occasions and with different methods, but they don't obtain great results from any of the encounters. If the new young vigilantes don't escape and disappear completely just by noticing the presence of the bats or birds (they always know where they are no matter who or how stealthy they are), they respond with jokes or sarcastic comments to any question, sometimes insults if they are not in the mood for an interrogation, they never fight or attack but they refuse to have a relationship with the local Gotham vigilantes, and after two months of this all they know is that the one in red and blue is Spiderman and the one in black and white is Phantom, and that's driving them all crazy, especially when in the few times they've faced them (they tried to capture one of them, it doesn't matter who, it's not a good idea) they have shown that they know how to defend themselves and that their abilities should not be underestimated, and if you try to go after one of them, the other will go against you with everything he has (I like to think that Peter and Danny would be overprotective of each other since they are the only thing the other one have in that universe and they are not going to lose their best friend if they can help it). The bats learned this the hard way and now know what to expect from each one of them. At the moment, the one who has shown that he could have the best chance of being a real threat in the future is Phantom, who managed to give a good scare to Nighwing and Red Hood and everyone who was around to witness it when the vigilantes were very close to capturing Spiderman, but as long as you don't touch his friend he's harmless (although there are suspicions that Phantom fell into the Lazarus pit, a classic), but Batman learned that if you try to hurt or capture Phantom, Spiderman will have no problem crushing you and breaking your ribs, again (first time was an accident, Peter felt really bad about it), he just didn't do it a second time because Robin was present and stopped himself so the little kid vigilante wouldn't be scared of him, so Batman knew from experience, although less scary and calm than Phantom, Spiderman is a time bomb and it's better not to give him reasons to explode.

So the bats keep their distance, as long as the new vigilantes don't hurt anyone or commit any crimes they decide that they can coexist in Gotham peacefully, and maybe collaborate if the opportunity arises and they need extra help. But then things start disappearing from Wayne Enterprises and some hospitals, and blackouts are reported, and strong shocks of static energy shake the city (Danny and Peter have begun their research and experimenting with the new technology they have in this universe, they're doing their best). None of Gotham's villains or criminals are responsible, so the main suspects soon become the new and enigmatic vigilantes. Now the real game begins, imagine the efforts the Batfamily would go to to obtain information and slowly gain the trust of Danny and Peter, all the interesting situations and interactions we could get out of this, I don't know, I think we could get at least 6 different stories out of this idea with all the juicy stuff a crossover likes this can offer.