Soulmate Body Swap AU — DC x DP
“Wrong Soul, Right Apocalypse”
The universe doesn’t warn you when it breaks.
There’s no dramatic music. No glowing countdown. No sign that reality just decided to ruin your day.
One second, Danny Fenton is mid-flight over Amity Park, chasing a ghost with a half-eaten burger still in his hand.
The next—
Everything tears.
Not explodes. Not shatters.
Tears.
Like someone dragged claws through the sky.
He lands hard.
But it’s not Amity anymore.
The air feels wrong. Heavy. Charged. Angry.
Danny looks up—
And immediately regrets having eyes.
The sky is filled with winged monsters. Buildings are on fire. People are screaming. Something massive is moving behind the clouds like a nightmare trying to crawl out of its cage.
“…okay,” Danny says slowly, “either I took a wrong turn or this is a really bad Tuesday.”
Then he looks down.
And pauses.
“…these are not my hands.”
Gloved. Scarred. Older.
There’s a sword at his side.
A very nice sword.
Danny picks it up.
It hums.
“Oh. Oh that’s fun.”
Somewhere else—
A completely different kind of disaster is happening.
They wake up on a rooftop.
Breathing hard.
Alive.
Which is already confusing.
Because the last thing they remember is being in the middle of a war zone, surrounded by enemies, barely holding the line—
And now?
Silence.
No explosions.
No screams.
Just… wind.
They sit up.
Look down.
Hoodie. Jeans. Sneakers.
No armor.
No weapons.
No—
“…no.”
They try to call their power.
Nothing answers.
Panic hits fast and sharp.
“No no no no—”
They rush to the edge of the building.
Below: a quiet street. A normal town. People walking. Cars passing.
No war.
No monsters.
No them.
“…where am I?”
Back in the apocalypse—
Danny is having a great time.
“Okay, so,” he narrates to absolutely no one, ducking under a blast of energy, “either I’m in someone else’s body or I got a serious upgrade overnight.”
He swings the sword.
A Parademon goes down.
“Leaning toward option one.”
Another one lunges.
Danny doesn’t even think—he phases halfway through the attack, solidifies, and kicks it away.
He freezes.
“…oh good, powers came with me. That would’ve been awkward.”
The comm in his ear crackles.
“Unidentified—state your status!”
Danny lights up.
“Oh cool, free tech.”
“Identify yourself.”
“Danny! Uh… I think I’m borrowing someone right now? Sorry about that.”
Pause.
“…what?”
“I think I soul-swapped with whoever this body belongs to. You guys seem busy though, so I’ll just—help?”
Another Parademon dives.
Danny flips, lands on a wall, runs three steps sideways like gravity is optional, then drops back down with a grin.
“Yeah, I’ll help.”
Across the battlefield, every hero listening comes to the same horrifying conclusion:
That is not their teammate.
“Track that signal,” Batman orders.
“Already on it,” Oracle says. “And you’re not going to like this.”
“I rarely do.”
“That energy spike? It’s not just the invasion.”
A beat.
“It’s him.”
Danny discovers the dog five minutes later.
It’s huge.
Glowing.
Three-eyed.
Growling like it could bite a tank in half.
Danny stares.
The dog stares back.
There’s a moment—
Then Danny crouches.
“…you look like a Cujo.”
The dog’s ears twitch.
“Oh my gosh, are you a good boy?”
The growling stops.
Tail—very slowly—wags.
“YES you are!”
Two minutes later—
Danny is riding the ghost dog straight through the battlefield.
“LEFT! LEFT—no your other left—yeah that one!”
They crash through enemies like a living wrecking ball.
Danny laughs, wind tearing past him, green energy flickering under his skin as Lazarus radiation curls toward him instead of away.
It doesn’t hurt.
It doesn’t corrupt.
It listens.
“…huh,” Danny mutters. “That’s new.”
Meanwhile—
His soulmate finds the truth the hard way.
They break into the lab.
Because of course there’s a lab.
And inside—
A mirror.
They look at it.
Really look.
Black hair.
Blue eyes.
Too young.
Too human.
“…Danny,” they whisper, reading the name off a scattered ID badge.
Memory flickers.
Not theirs.
His.
A ghost portal.
A lab accident.
A boy split between life and death.
Power—immense and unstable and lonely.
Their stomach drops.
“…you’re a child.”
Back in Gotham—
Things escalate.
Fast.
The sky splits wider.
Something begins to push through.
Not a creature.
Not exactly.
A presence.
Old. Hungry. Endless.
Even the Parademons hesitate.
Even the heroes step back.
Danny looks up.
Eyes wide.
Then—
He grins.
“Oh that is definitely not from around here.”
“Fall back!” someone shouts over comms. “That’s not something we can—”
Danny’s already moving.
“Okay, new plan,” he says, patting the dog’s head. “We go say hi.”
They launch.
Straight at it.
“STOP HIM—” Nightwing starts.
“—you’re not going to,” Red Robin says, watching the energy readings spike off the charts.
“Why not?”
“Because whatever he is?”
A beat.
“It’s not scared of that.”
Danny reaches the tear in the sky.
The thing behind it shifts.
Noticing him.
Focusing.
And for the first time—
It pauses.
Danny tilts his head.
“…oh. You can see me.”
The presence presses closer.
Curious.
Hungry.
Recognizing something it shouldn’t.
Danny’s voice drops.
Not playful anymore.
Not human.
“Yeah,” he says quietly. “I see you too.”
For a second—
The battlefield goes still.
Then Danny lifts a hand.
Green light floods the sky.
Cold. Ancient. Infinite.
Not Lazarus.
Not alien.
Something older than both.
“Hey,” Danny says.
Friendly.
Terrifying.
“Wrong universe.”
And he pushes.
The tear screams.
The presence recoils.
Reality snaps back like a stretched rubber band.
The sky seals.
The invasion stutters—
Then collapses.
Parademons scatter.
The war… ends.
Silence falls.
Danny blinks.
“…huh. That worked.”
Below—
Every hero is staring.
Batman steps forward.
Slow.
Measured.
“…who are you?”
Danny smiles.
A little sheepish now.
“Danny Fenton.”
A beat.
“…I think I’m your teammate’s soulmate?”
Across dimensions—
His soulmate finally understands why.
They look at Danny’s reflection again.
At the quiet town.
At the life he protects.
At the power he carries like it’s nothing.
“…of course you are,” they murmur.
Back in Gotham—
The ghost dog barks happily.
Danny hops down.
Hands the sword back like he didn’t just end an apocalypse with it.
“Here you go! Super fun, by the way.”
No one takes it immediately.
Because they’re all thinking the same thing:
We are absolutely not prepared for this kid.
And somewhere, deep in the fabric of reality—
The bond between souls settles.
Locks.
Anchors.
Not a mistake.
Not an accident.
A warning.
Or maybe—
A promise.
End.
