There were, all in all, two things that happened to Danny:
The first Incident (as his unconscious mind dubbed it, with a capital I) was that he had been caught in the Ghost Portal as it turned on, and become a half-ghost. It was hardly the brightest moment of his life -- in fact, it was one of the worst, the absolute most miserable instant of pain he had ever known.
But, hey, it wasn't longer than a dozen seconds, and now he was a half-ghost. He'd obviously gotten better, and then some, because even if he was dead, he was also alive.
The second Incident was that he had gone through the Fenton Ghost Catcher, and been separated into two versions of himself. That also hadn't taken longer or lasted longer than a dozen seconds, and it was, the more he thought about it, even more horrifying than becoming a half-ghost.
Because it implied that maybe he had been divided by the portal, rather than transformed.
He had come out of the Ghost Portal intangible, falling through floors every few minutes, but he was still all in one piece and one place. He flew through the Ghost Catcher on accident, and he came out as two different people.
How on earth had that happened? It was strange enough, being electrocuted, irradiated, and dosed with toxic ectoplasm, before walking away better than ever. It was even stranger , walking through a two-dimensional strainer and being harmlessly spooled apart into multiple independent versions of himself, rather than getting cut to ribbons on the lines of the ecto-wire in the Ghost Catcher.
And maybe that wasn't even what really worried him. He had come apart into a human half and a ghost half for all of a dozen seconds, and for that span of time, he remembered being his human half, staring up in a daze at the loss of his ghost powers. He remembered being human, looking up at his ghost half, and watching as his ghost half re-entered him and merged with him.
But he didn't remember being his ghost half at all.
And there were a few different things that might mean.
If he had been one person, then became two people, then became one person again… it seemed that he could still only remember being one person at a time. Whatever he had thought, finding himself as his ghost half, that was lost to him. If he split and reunited again, his ghost half might always be under the sword of Damocles, awaiting amnesia.
He didn't like the thought of that very much.
If things were even hazier than that, well… he remembered being his human half, and he didn't remember being his ghost half. The obvious assumption was that he -- Danny, the person who was sitting down on the couch of his living room and thinking about all of this, right now -- was still only the human half. He was the human half, but he had ghost powers somehow, while his ghost half was… still separate from him? But not separate, because they were in one body again?
Danny didn't like the thought of that, either, because it was bizarre and confusing.
But he couldn't have it both ways, could he? Either he was always going to have a hard time remembering things after dividing and coming together (in which case he would have to zealously stay all in one body), or there was someone who did remember being his ghost half, and it wasn't his human half who would remember.
He couldn't shake the idea that maybe… maybe his ghost half was still in him somewhere. If Danny was the human half, then maybe the ghost half was just sleeping, waiting to come out, or something like that. Maybe the ghost half inside of Danny would remember what Danny could not.
And that thought was what dragged him down to the laboratory in the basement, late at night, when his parents were already asleep, slumbering like logs. He tore through the closets and storage lockers, looking for the Fenton Ghost Catcher -- and after almost half an hour of searching, he found it again.
"Well, this is awkward."
Danny's ghost half -- Phantom , Danny decided to call him -- floated idly in mid-air, turning over and over as if to spit in the face of gravity.
Danny had never actually… seen what he looked like, as Phantom. Sure, he could get a look in the mirror, but you never looked to other people the same way you did to yourself. You presented yourself to the mirror differently compared to how you presented yourself to other people. A different kind of smile, maybe; different tensions and relaxations.
In that respect, perhaps Danny had never actually seen what he looked like as Danny. But that wasn't why he had split himself again, not at all.
"Is it awkward?" Danny asked, finding his throat quite dry. "I didn't notice."
Phantom's gaze was perfectly serene, a look that was terrible on him. Then he turned intangible and leapt back into Danny's chest, and a familiar chill swept over Danny, the cold of his subdued ghost powers.
"Hey! I brought you out for a reason!" Danny yelled, much more confidently than he actually felt. Again, he had been divided… but he only remembered being a human, rather than being a human and a ghost. A terrible sense of rising doom was falling over him.
So he activated his powers again and flew through the Fenton Ghost Catcher. Danny fell, and Phantom drifted forward, untouched by gravity.
"Seriously, I'd rather you didn't do that," Phantom said, his voice strained. "It's uncomfortable."
"Uncomfortable," Danny echoed, almost incredulously. If he thought about it, he was uncomfortable, too, without the reassuring cold of his ghost half inside of him. But he also thought that he didn't care, because this was more important. "Why?"
"You wouldn't understand," Phantom said, as desperate as a dispassionate man could be. Danny was struck with a sudden burst of sympathy for Jazz, and for his parents, because he had said much the same in as many words before, and it was utterly infuriating to hear.
"Try me," Danny said. Phantom moved, as if to re-enter Danny yet again, and then stilled. He smiled sadly.
"You know you're smarter than you think you are, Danny," Phantom said, perversely affectionate. Danny felt his spine crawl.
"I'm a C student," Danny pointed out, his voice wavering a little.
"You're busy," Phantom rebuked. "And you don't see the point of school because even without the ghost fighting you're a depressed teenager, and so you can't imagine a future for yourself. But your parents are smart, and I think you got it from them."
"They're smart enough to be really dumb," Danny said. "But that's not what I wanted to talk to you about… and you can talk with me, can't you?"
"Yes," Phantom said flatly.
"You're intelligent enough to understand the words that I'm saying, and to understand what I mean, and… you can reply."
"Are you surprised?" Phantom asked, a little amused, now.
"I… shouldn't be." Danny licked his lips. He thought of his parents, as condescending to ghosts as they were enthralled. They did not think highly of ghosts, or consider the possibility of any particularly intelligent discourse with them.
Danny, of course, disagreed. He was a ghost (aside from times like now), and he expected that he was generally intelligent. And… he knewghosts. He had spoken to them, and they could communicate, just like Phantom was now.
"But you are surprised," Phantom surmised. "Because you don't expect to ever hold a conversation with a part of yourself, right?"
"I think you have me at a disadvantage," Danny said.
"I do."
"You know a lot about me, don't you?"
"I do."
"That's incredibly creepy."
Phantom laughed, and the laugh was Danny's laugh, behind the echo and static of a ghost's voice box. "Why do you think I said this was awkward?"
"To distract me? I don't know." Danny looked down. "What… what are you?"
"I don't know," Phantom said, his voice so earnest that Danny doubted his own mother could find a lie in it.
"You don't know?" Danny said, doubtful.
"Do I look like a ghost expert?" Phantom asked rhetorically. He glanced down at his own semi-translucent body. "Don't answer that."
"You have to know something, " Danny said. "You have… I don't know, you're a person, right?"
"Uh, yeah."
The sense of dismay and doom spiked painfully. "So you have your own idea of yourself? You think of yourself as different from me?"
"Yes," Phantom said.
"Do you… are you able to think, while you're a part of me? Just like I can think, when you're a part of me?"
"...yes," Phantom admitted quietly. Danny felt the bottom drop out of his stomach, and quiet horror turned to adrenaline.
"So why do you want to be a part of me at all!?" Danny yelled. "You could have left and done your own thing as soon as the Ghost Catcher separated us for the first time. Why is it so uncomfortable not to be a part of me?"
"Well, I don't know!" Phantom snapped.
"There has to be more to you than that!" Danny shot back. "You can't just… want to hitch a ride, and nothing else!"
"Why?" Phantom asked scornfully. "Because that's creepy? Do I scare you?"
"Yes! Of course you do!"
"Don't be. If I wanted to do something to you I would have done it already." Phantom shook his head. "Like I said, you don't get it. If I wanted to live your life, you're doing a better job of that than I can."
"My life!? What about your life?"
"My 'life' is your life, Danny. Or did you miss the fact that I'm your ghost half? The part of you that's dead?"
Phantom's words stopped Danny in his tracks. "You… you don't… you can't imagine being anyone other than my dead side? My ghost?"
"No, and why would I?" Phantom laughed. "Does the Box Ghost imagine being someone else's ghost? Do you think he imagines having a life of his own beyond being the ghost of a dead man?"
The absolute matter-of-fact tone was chilling. Danny felt a little sick. "I thought you thought of yourself as… different from me."
"You're alive, and I'm not," Phantom said. "We are different in that sense, even if we're both… the same person, in other respects. But why would I want to carry on where you left off, like the other ghosts carry on for the other dead, when you're already still alive? You carry on just fine for yourself."
"And you're…" Danny swallowed. "you can't be happy like this."
"Why not?"
"If you're me…" Danny trailed off. "Isn't it boring?"
He couldn't imagine anything more horrible than sitting in the back, watching as someone else lived his life for him.
"I don't think I can feel boredom," Phantom said quietly. "There's always something to think about. And, if nothing else, there's never a dull moment, with everything in your life."
Somehow, Danny expected to be disgusted and sad and terrified about Phantom forever. But eventually the two of them had to put themselves back together, because Danny needed to be Danny Phantom, and he allowed himself to forget about his unease.
It was so weird, talking to your doppelganger and listening to hear him as he explained that he wanted nothing more than to do cede his very life to you. Danny saw that Phantom was really just… empty. Empty on every level. But he wasn't sad, not like Danny might have been, in his place.
Sometimes Phantom even seemed happy, something that Danny scarcely understood. But Danny couldn't argue with Phantom's happiness, as he lived his life, and it was probably enough for Phantom to just be happy. It was certainly better than Phantom living as a miserable and jealous ghost.
His Mom and Dad always said that ghosts envied the living, as one of their driving motivations. But maybe you could want what someone else had, without also trying to take it from them for yourself -- and maybe you could want what someone else had, while still feeling happy for them.
But all good things had to come to an end, and eventually this good thing did.
"No," Phantom said. "I won't."
"Why not!? You have all of the time in the world in there, to think and memorize!"
"No," Phantom said once more. "I will not. You want me to be your cheat sheet for this test? Where does that end? If I give you the answers, are you gonna ask for more later? Are you going to start asking for me to tell you what to do, to help you make the right decisions?"
"What?" Danny asked. "That's… ridiculous! I know you like to stay in the back!"
"I'm sure you think it's ridiculous," Phantom replied. "But my answer is still no. If I tell you what to do, even for something as petty as this, then you're not living your life -- I'm living your life for you, in a petty way. I am not going to wear you like a puppet!"
Danny felt angry, angrier than he had been in a long time. Once he had been afraid of and disturbed by his other self, but familiarity had bred a kind of contempt and disrespect. In that moment, he felt like he was in the same rut he always was, fighting with ghosts who could never really change. "Why are you so insufferable!?"
Phantom was silent.
"If you won't help me on the test, then I'll help myself."
"Good," Phantom said. "Anything would be better than relying on me."
"I already rely on you," Danny replied, in a snit. "You're my ghost half, my ghost powers!"
Phantom didn't respond. Danny never understood anything at all.