Summary:

While hiding from his parents in Gotham, an ill-timed encounter with his neighbor, Jason, has Danny pretending to be his own twin. Fortunately for Danny, the more he pretends the easier it gets. Until he is not pretending at all.

Or: Danny names a duplicate and via ghost logic, said duplicate ends up becoming real.

Notes:

For jackdawSprite.

This story was written thanks to JackdawSprite who commented on a Tumblr post a wrote asking what I should write next with "I haven't read nearly as many of your works as I'd like to before saying which ones I'd like to see continued, but there's one where Danny names a duplicate, and because of ghost logic, the duplicate becomes real. It feels like such a neat idea to play with!" So here I am writing a whole fic about it!
Structurally, this is still very much half-fic outline with some important scenes written out. I'm not planning on expanding it beyond what it is. Still, I hope you enjoy the story. :)

A note for readers, those here for the DC content especially: this is very much a Danny heavy fic. The focus will be on Danny and Jamie's relationship as the clone goes from just a duplicate without its own life, to a real person with his own identity. The Bats, Jason especially, will be present, and important for Jamie becoming his own person. But those relationships are definitely secondary to Danny and Jamie's.

Chapter 1

After a reveal gone wrong, Danny runs from his parents and the GIW. Soon, he finds himself living in a crummy apartment and trying to keep a low profile. He doesn't have very much, so he is very excited to find an actually in decent shape couch that someone was throwing out. It's late so, figuring no one will see him, Danny duplicates to have two pairs of hands to get the furniture up the stairs and into his apartment.

Of course, Danny does get spotted by his neighbor, Jason, who offers to hold doors open and help with the unwieldy couch. Names are exchanged: Danny and, after a pause as Danny realizes he has to come up with something for his duplicate, Jamie. The "three" manage to get the couch inside. But now Jason is worried about what appears to be a pair of twins, 16 years old at the most, living alone in the apartment with one ratty couch and a bookbag between them. Jason isn't pushy or overly concerned, but he does make a point to check on his new neighbors regularly.

After the second time running into Jason and being asked about "Jaime," Danny realizes he's going to have to pretend to be his own twin. Duplication is very helpful for that, though he tries not to do it too often and for too long; it does use a lot of energy. He'll just have the "twins" make regular, short appearances together. It's not like he's trying to get close to anyone in Gotham

But inevitably, short appearances escalate into having dinner with Jason. The first is a one off; man claimed he made too much and Danny didn't really have money for food. Plus it was really good. Accepting the hospitality just this once wouldn't be that bad. Of course, "Jamie" has come to dinner too.

One dinner leads to more meals with his neighbor, to Jason trying to teach "the twins" to cook more than easy mac.

Jason's youngest brother meets the "twins" when he pounds on the door during dinner and barges in, complaining that "Father is being unreasonable" and had ground him.

Damian and "the twins" end up huddling in Jason's apartment during Danny's first rogue attack since he arrived in Gotham. Jason ran off as soon as the alert went off, claiming that he was needed at the fire station where he worked. He pointedly says that Damian can stay and look after his non-Gothamite neighbors since he's grounded. The preteen is prickly but does stay put. Danny starts to get restless, unable to re-merge and starting to fear that his energy will waver and "Jamie" will pop out of existence. He nervously eyes the door and Damian threatens to stab him if he tries to leave, saying that "Todd is apparently fond of you both and will be quite peeved" with Damian if something happens to Danny and Jamie.

Well... Jamie will definitely disappear if Damian stabs him. So Danny manages to maintain his duplicate for five hours, more than twice as long as any time before. By the time the threat is over and Danny can go back to his apartment, he is straining, desperately trying to hide how exhausted and shaky he is from the excursion. He loses hold of the duplicate as soon as the door is closed.

Despite the hardship, maintaining a duplicate is somehow so much easier after that. He can stay duplicated for longer and gradually, he realizes controlling the secondary body is becoming easier. At the beginning, he needed a lot of effort and control to pilot the duplicate, having to mentally direct it to speak or move. He played "Jamie" as being shy and quiet, so there was less talking to dictate. But overtime, the need for mental prompting becomes less and less. Playing "Jamie" became more automatic, more instinctual. Almost like the duplicate runs on auto-pilot, mostly acting how Danny himself would, though more reserved. To an outside perspective, it looks like "Jamie" is finally getting comfortable and coming out of his shell. But to Danny, this was a relief, spending less energy running his duplicate and less time worrying about being found out.

Slowly, Danny meets more of Jason's family. One of Jay's brothers, Tim, runs into him at his coffee shop job and, blinking sleepily, asks which twin he is, before realizing that Danny is wearing a name tag. This leads to Danny's coworkers finding out about "Jamie" and his "twin" visiting him at work.

As the act grows and more people end up meeting "the twins," Danny spends more and more time pretending to be a pair of twins in more and more ridiculous situations. Playing both of them gets easier and easier, more and more comfortable until the twins can banter, share inside jokes, and tell stories from their childhood. Maybe it is intentional, maybe it's subconscious. But slowly, differences develop to differentiate the twins. "Jamie" is growing out his hair. He loves toast and watching documentaries about history. Danny, more and more convincingly, pretends to have a brother until at some points... it no longer feels like he is pretending.

Despite his new friends, Danny is still so lonely. The apartment is still almost bare, the money he gets from his job barely enough. It's never the job he wanted; he wants to be in school now, applying to colleges so he can get into NASA. But he can't do anything to draw attention to himself, not with the government breathing down his neck or the danger of the vigilantes running him out for being a "meta". And he misses his friends and sister so badly.

One particularly hard night, when he is heartbroken and hurting, Danny lies on his second-hand mattress in the dark, weeping. He mourns his parents turning on him, his heart aching for Sam, Tucker, and Jazz. He wishes more than anything that he was not alone right now.

Suddenly, there is a yanking on his core that leaves his gasping. A full body pulling sensation that almost feels like being peeled, except somehow it does not hurt. A second later, it is over and through his blurry eyes, Danny can barely make out a figure kneeling in front of him. Arms coax him into sitting up and pull him into a hug. Danny cries for a long while, not thinking about what just happened, not thinking about what... or who... is holding him. He just accepts the comfort, savors the feeling that he is not alone.

Finally, after the tears slow, Danny pulls back and looks. He lets himself realize what he is looking at. And as he takes in eyes like his, the feeling is something between awe and fear. There is a light in the blue eyes, a spark that he does not recognize.

And as the brow wrinkles in confusion and the mouth slowly works, words spiral out. Words that Danny could never have predicted.

"If we... if you keep doing this..." Each word is slow and deliberate, as if each takes great effort. "This..." One hand motions slowly, vaguely, as if un-used to movement. "Jamie won't be a lie anymore."

Danny is stunned. He stares for a long while, unable to process. He does not understand what the words mean, why the spark in those eyes makes him just as elated as it makes him afraid.

So he takes the duplicate's hand and pulls the ecto-energy back inside himself. He reabsorbs it and "Jamie" disappears. And Danny thinks.

Slowly, he realizes how easy staying duplicated has become, how distant and foggy memories from his duplicate's perspective are. He replays the words in his head. 'If you keep doing this... Jamie won't be a lie anymore.' He wonders if they mean what they suggest, and most startlingly... he wonders where they had come from, if not from himself.

For a few days, he avoids anyone who has met the twins or claims that his "twin" is busy whenever someone asks. But inevitably, his trusty neighbor Jason notices the avoidance and invites himself over to cook dinner. Reluctantly, Danny duplicates; there is clearly no avoiding this conversation.

The dinner is awkward. Danny has a hard time looking at Jason... and an even harder time looking at his seeming twin. None of the three say much and by the end, their neighbor huffs a sigh and says his piece.

"Look. I know that no one, especially two teens, live in a shitty apartment in Crime Alley if they can avoid it. I don't know if you got kicked out, ran away from home, are hiding from something. And I don't care. I won't ask. But I was an alley kid. I lost my mom younger than both of you, ended up on the street. I know what it's like just scraping by, trying to survive all on my own. That's why I look out for the kids here. I want to help you guys, no matter what your story is."

Danny stammers out a disbelieving thanks. He is touched, really, despite the fear of discovery, of vulnerability quivering in his heart. Jason is a good guy and it feels good to have someone who cares. But... the maybe-not-a-lie sits on the couch beside him. A story he could never hope to explain...

Jason smiles, ruffling both of the twin's hairs. He stands to leave. "Take care," he says, almost afterthought. "You're lucky to have each other."

"Jamie" seems to lean, just the tiniest bit closer to Danny at the words.

Jason leaves and it is just Danny and his duplicate. The half ghost releases a breath, letting some of the tension release. He reaches to reabsorb his double and-

A shaky hand grips his forearm. Danny looks, meeting the blue eyes. The spark is back, just the smallest hint in the posture that something is different. Slowly, the brow wrinkles, becoming something worried.

"What is it?" Danny finds himself saying, as if he expects a real response.

"Have... each other." Again, the words are slow as if just the act of thinking is hard. "Not a lie."

Now Danny's brow is wrinkled. "Not a lie? Are you saying that's true? Or asking if it is?"

"Not a lie." The words repeat. "Jamie not a lie."

Danny's stomach knots. He's heard his duplicate speak dozens of times, even been surprised by some offered puns. But this…

"Not a lie." One more repeat, this one faster, surer, almost desperate.

Danny looks up again. "Jamie." He says the name. He's spoken to his double before in front of other people, as part of the act. But this… it feels as bizarre as it feels right. "Jamie…. Are you… real?"

For just a second, there is something like hope in the other's eyes. Then, the brow furrows in great effort. "Yes… No…." One more longer, unsure pause. "Becoming."

"You're… becoming real?" The words are breathy. Danny isn't sure whether they make him feel that same hope, or if he feels sick.

The half ghost looks away, staring down at his lap. He doesn't know what this is, how this is happening. A moment of panic stabs. Is he sick or insane? Or… is it a trick? A trap?

Danny reaches with his mind, trying to feel. A parasite infecting him? Another ghost, trying to overshadow. There is a connection, a bundle of a dozen fine threads. It is a link to… something not quite separate. Danny feels the almost presence at the end, the not-quite himself he is speaking with. And… It is like cradling a baby bird. Small, fragile, and so young. No malice, just pure innocence.

The half ghost looks up again. His hand shifts, feeling the cold flesh. His fingers press, the almost flutter of a heart beneath the skin.

The awe from that late night rises, a question echoing in his head. What happens if he lets this continue?

He… won't be alone. Danny remembers that night, crying on his mattress and desperately wanting comfort. And all those times hanging out with Jason. The jokes and banter started as an act to sell the lie. But… weren't they so much more now? Danny had pretended to have a brother and in pretending had imagined one… Now that brother, that twin sat beside him.

But at the same time… fear spiked. What would happen if he didn't stop this? Could he even stop this if he wanted to? It feels inevitable, unstoppable. Not if he stays living next to Jason. But… if he tells the truth? Or if he runs, starts again somewhere else. He could reabsorb his duplicate now and let this whole thing fade into memory. Jamie would disappear…

A wave of fear surges from outside himself. Danny meets terrified eyes. Something in him softens, crumples.

"Jamie?" Danny asks again and can almost feel the heart-flutter solidifying. "Do you want to be real?"

There is a pause, the fearful face becoming something narrowed eyes and sure. "Yes." So much determination. Danny feels the one thread of dozens snap.

"Alright then." Danny heaves a sigh, deciding.

He will hold out as long as he can. He will stay duplicated, keep Jamie here until he's not a duplicate at all. Jamie will be real.