The flesh pillars grew beyond planets now, reaching into the void between worlds. Biomass that should have been impossible in the vacuum of space spread like roots through darkness, connecting one transformed planet to another. The sight was incomprehensible, beautiful in its horror—organic bridges spanning light-years, pulsing with stolen life.
Planets became neurons in a vast network. Each world a cell in something larger, something aware. The pillars thickened as they grew, data flowing through them in pulses of bioluminescent light. Chemical signals. Electrical impulses. The language of flesh translated to cosmic scale.
This wasn't happening in one sector. This was everywhere.
The entire universe was becoming a singular organism, and Marcus was its architect.
"What... what is this?"
The question came from someone aboard the Wakandan ark-ship, their voice barely a whisper. Through the viewport, they watched planets knit together like neurons forming synapses. The mathematical precision of it was staggering—billions of connections forming simultaneously, each one perfectly positioned.
"It's alive," Shuri breathed, her scientific mind struggling to process what her instruments were telling her. "The universe itself is becoming... alive."
The readings didn't make sense. Couldn't make sense. But there they were—bioelectric signatures spanning parsecs, organized patterns suggesting consciousness, purpose. The universe was transforming from a collection of separate objects into a unified thing.
And none of them had any idea what a living universe could do.
T'Challa stood at the viewport, his reflection ghostly against the cosmic horror beyond. "This is beyond anything in our knowledge," he said quietly. "Beyond anything we were prepared for."
"We were never prepared for any of this," Okoye replied, her hand resting on her spear—a gesture of comfort more than readiness. What good was a weapon against something that consumed galaxies?
Back on Earth—or what had been Earth—Marcus poured every ounce of power into his work. Void energy cascaded through the Infinity Stones, and the stones amplified it a thousandfold. The combined power flowed through his armor, through the biomass network, urging every piece of corrupted flesh to reach, to connect, to become.
"First time I've turned an entire universe into this," Marcus said, a note of satisfaction in his voice. It was an achievement, really. Most people conquered planets. Some conquered galaxies. But converting an entire universe into a living extension of himself? That was something special.
He pushed harder.
The flesh pillars responded, growth accelerating exponentially. What had been taking hours now took minutes, then seconds. Planets that had been separate nodes were suddenly linked by dozens of connections, then hundreds. The network densified, grew more complex, more intelligent with each new synapse.
At the edge of the universe, at the very boundaries of reality, the biomass touched the cosmic horizon and stopped. There was nowhere left to spread. Every planet, every moon, every asteroid—all consumed, all connected. The entire universe was covered in a lattice of living tissue that pulsed with terrible purpose.
From a distance, if such perspective were possible, it looked like a brain.
A massive, cosmic brain suspended in the void.
The Infinity Stones' energy continued its work, flowing along the pathways Marcus had created. Six colors—red, orange, yellow, green, blue, purple—spiraling through organic conduits. And then, like throwing a switch, the brain activated.
It began to squirm.
Slow at first, tentative, like something waking from deep sleep. Then with more purpose, more awareness. The movement rippled across galaxies, a wave of awakening that spread from one edge of existence to the other.
If you could stand in the void beyond universes—in the space between realities where only the most powerful beings could exist—you would see something impossible. A phantasmal shape, humanoid and vast, wrapped around the zombie universe like a dreamer curled around a pillow. And where the figure's head should be, there was only the transformed universe itself, glowing with sickly light.
The armor promotion was reaching completion.
Marcus felt the transformation accelerate. His body burned with energy, flesh and metal reshaping themselves at the molecular level. The distorted biomass covering him began to change—pustules smoothing out, festering tissue hardening, the grotesque becoming merely fearsome.
When the light faded, he was different.
Nidus Prime had emerged.
The armor no longer resembled the pink, festering horror it had been. Gray calcified material covered his form like ancient stone, shot through with veins of gold that pulsed with inner light. The design was organic but refined, brutal but beautiful. No one looking at it would guess this elegant warrior had just devoured an entire universe.
Marcus flexed his fingers, feeling the power coursing through him. Every zombie consumed. Every planet integrated. All of it now part of his strength, his essence, his being. The promotion was complete.
"Well," he said, looking down at his transformed hands. "That went better than expected."
He turned his attention to the Wakandan ship, still drifting through his newly claimed territory. They'd witnessed everything—the transformation, the awakening, the birth of something beyond their comprehension. By rights, he should probably do something about that. Witnesses could be problematic.
But Marcus had promised them time, and he kept his promises.
"Time to go," he murmured. "And they'll need somewhere to survive."
With a casual gesture, Marcus reached into the fabric of reality and pulled. Space tore open like wet paper, revealing another universe beyond—one still whole, still untouched by zombie plague or cosmic transformation. A parallel Earth where the infection had never taken hold.
Before the Wakandans could even process what was happening, Marcus pushed.
The ship shot through the portal like a bullet, carried on a wave of Void energy. The survivors barely had time to scream before they were through, tumbling into a new reality where they might actually have a future.
"The multiverse is already in flux," Marcus said to the empty void. "They'll meet people from other universes soon anyway. I'm just... speeding up the timeline."
The portal began to shrink, the tear in reality slowly healing.
"Have fun!" Marcus called after them, his voice somehow carrying across dimensional boundaries. Let them make of their second chance what they would. They'd earned it by surviving this long.
As the passage sealed completely, Marcus allowed himself a small smile. "That's done. Now I can finally check on Tony and the others."
He'd left the Avenger to handle their own problems while he dealt with the zombie outbreak. Hopefully they hadn't burned down their universe in his absence.
"I hope they haven't had too hard a time," Marcus said, already beginning to detransform. The armor peeled away like shedding skin, revealing his human form beneath—a reminder that despite everything, despite consuming universes and transcending mortality, he was still fundamentally him.
Reality rippled as he tore open a Void passage, this one leading back to the main Avengers universe. His work here was done. The zombie universe would remain as it was—a living monument to his ascension, a reserve of power he could draw upon if needed.
Marcus stepped through the rift and vanished, leaving behind a universe that dreamed with his dreams.
Avengers Compound - Main Universe
"I've found some strange things recently."
Tony's voice carried the particular edge it got when he was annoyed and vindicated. He sat on the common room sofa, holographic displays flickering to life around him with a gesture. The others gathered around—Steve, Natasha, Clint, Bruce, and several newer members.
The projection showed a man in a ridiculous spherical helmet, green cape billowing dramatically as he flew through the air. Energy effects crackled around his hands, reality itself seeming to bend to his will.
"Mysterio," Tony continued, practically spitting the name. "Self-proclaimed hero from another universe. Shows up every few weeks, fights some 'elemental demon,' saves the day, gets praised by the media. Real stand-up guy."
"Strange things?" Peter's voice came from the ceiling, where he was hanging upside-down like the spider-themed menace he was. "But Mysterio's helped me out a bunch of times! He seems like a good guy."
Several others nodded. The mysterious hero had become something of a media darling lately, always appearing at just the right moment to fight off the elemental creatures threatening the city. Water demons, fire demons, earth demons—each one more destructive than the last, and each one defeated by the interdimensional traveler.
"That's what he wants you to think," Tony said, his tone hardening. "But he's not a hero. He's not from another universe. He's just a liar."
The room went quiet.
Tony pulled up another series of windows—inventory reports, security footage, coded manifests. "After the battle with Thanos, Stark Industries lost a significant amount of equipment. I thought it was collateral damage, debris scattered during the fight. But it wasn't destroyed. It was stolen."
He highlighted specific items on the list. "Advanced holographic projectors—military-grade, capable of creating photorealistic images indistinguishable from reality. Sonic disruptors that can level buildings. Pyrotechnic drones that can simulate everything from simple fire to plasma explosions. Electrical discharge units. All prototypes, all cutting-edge, all mine."
Steve leaned forward, studying the reports. "You're saying Mysterio has been using your technology?"
"Not just using it—building his entire act around it." Tony's fingers danced across the holographic interface, pulling up technical specifications. "These drones were designed for a victory celebration. Fireworks, light shows, that kind of thing. I wanted to do something special after we beat Thanos, show people that we were still here, still fighting."
His expression darkened. "But someone had other ideas. If you coordinate these drones properly, if you understand their capabilities and how they interlock..." He pulled up a simulation showing dozens of drones working in concert. "You could fake anything. Monsters, magic, interdimensional visitors. You could create an entire persona out of nothing but light and force."
Natasha studied the projection of Mysterio with new suspicion. "And you can prove he's using your tech?"
"Better than that—I can track it." Tony zoomed in on a segment of code. "I built a special communication frequency into every Stark Industries product, hardcoded into the underlying logic. It's a failsafe, in case of theft or unauthorized use. And guess what frequency I've been detecting at every single one of Mysterio's 'heroic interventions'?"
The answer hung in the air, damning in its obviousness.
Bruce adjusted his glasses, his scientific curiosity overriding his usual caution. "So every time he shows up to fight an elemental..."
"It's all staged," Tony confirmed. "The demons are projections. The battles are choreographed. And 'Mysterio' is just some guy in a fancy suit, playing hero with stolen technology."
Peter dropped from the ceiling, landing with his characteristic grace. "But... why? If he's not actually stopping threats, what's the point?"
"Fame. Attention. Maybe he's building up to something bigger." Tony shrugged. "Or maybe he just likes playing superhero without actually risking anything. Either way, he's a fraud and a thief, and—"
BEEP BEEP BEEP!
The base alarm cut through Tony's explanation. Everyone tensed, hands moving to weapons or preparing for combat. But Tony just smiled—a thin, predatory expression that promised trouble for someone.
"Perfect timing," he said, pulling up the external cameras. "Our 'hero' is about to make another appearance."
The holographic display shifted, showing aerial footage of the city. Mysterio soared through the air, cape streaming behind him, energy crackling around his fists. He moved with practiced grace, every gesture calculated for maximum dramatic impact.
And in front of him, a massive blob of water crashed through the streets like a living tsunami. The "Water Elemental," shaped vaguely like a humanoid figure, smashed through cars and buildings with seemingly mindless fury.
"The water demon," Natasha observed. "One of the elementals he's been fighting."
"One of the drones he's been controlling," Tony corrected. "Watch closely."
The water demon moved with surprising agility for something so large, flowing through narrow spaces and around obstacles. It left wet trails wherever it went—the only evidence of its passage aside from the destruction.
The Avengers watched the chase unfold on screen, Tony's revelation coloring everything they saw. The dramatic poses, the perfectly timed attacks, the way Mysterio always seemed to be just fast enough to keep up but never quite fast enough to stop the creature before it caused visible damage...
It was all theater.
"He's good," Clint admitted grudgingly. "If you don't know it's fake, it looks completely real."
"That's what I paid for," Tony said bitterly. "Those projectors don't come cheap."
The water demon rounded a corner, heading for a more populated area. Mysterio followed, energy gathering around his hands for what would surely be a spectacular finishing blow—
And then someone else appeared on screen.
"What kind of garbage is this?"
Marcus' voice carried clearly through the surveillance audio, irritation evident in every syllable. He stood directly in the water demon's path, arms crossed, looking more annoyed than threatened.
The Avengers leaned forward, suddenly very interested.
The water demon crashed toward Marcus like a tidal wave. He didn't move, didn't flinch, just raised one hand and swatted.
The gesture was almost contemptuous.
Several objects—too small to see clearly on the surveillance footage—shattered in the air. And the water demon glitched. Its perfectly fluid surface flickered with digital artifacts, the kind of screen distortion you'd see on a broken television. Sections of its body turned into static, revealing the holographic framework beneath.
"Oh shit," Peter whispered.
Tony grinned like a shark. "Oh, Marcus is pissed."
Mysterio caught up, clearly aware that his carefully orchestrated performance was falling apart. But he'd already committed to the scene, already positioned himself as the hero. Backing off now would raise too many questions.
So he doubled down.
"Thank you!" Mysterio's voice boomed, amplified for the cameras he knew were watching. "I didn't expect the water demon to be so cunning—using projections to distract my attention!"
It was a decent save, honestly. Plausible deniker that the damaged projection was part of the monster's trickery rather than evidence of the whole thing being fake. The gathered crowd murmured, buying the explanation.
But Marcus wasn't interested in the crowd.
"Are you... kidding me?"
Marcus tilted his head, studying Mysterio with the kind of attention a scientist might give an interesting bug. His eyes—visible even through the helmet's smoky interior—tracked across the array of drones surrounding the "hero."
"These are Stark Industries drones," Marcus said, loud enough for everyone to hear. "Which makes this guy a thief."
His hand moved faster than the cameras could track.
One moment, Mysterio was floating confidently in the air. The next, Marcus had him by the throat, suspended at arm's length like a misbehaving puppy.
"Poor actor," Marcus observed clinically. "With an equally pitiful support team."
Energy rippled outward from Marcus' free hand—Void power mixed with electromagnetic disruption. Every drone in the vicinity exploded simultaneously, firework-bright detonations painting the sky.
The magic vanished.
The projected flames, the dramatic energy effects, the mysterious smoke that always seemed to surround Mysterio—all of it disappeared as the drones creating the illusions shattered. The crowd gasped, cell phones rising to capture the moment when their hero was revealed as a fraud.
Marcus crushed the spherical helmet with casual pressure, metal crumpling like tinfoil. The glass shattered, smoke dispersing, revealing an utterly ordinary man beneath. No mystical powers, no interdimensional energy. Just a guy with good tech and bad intentions.
"The theft was from Stark Industries," Marcus said, his voice carrying that particular flatness that meant someone was about to have a very bad day. "And I happen to have a stake in that company."
The man—Quentin Beck, according to the driver's license JARVIS would pull in about thirty seconds—struggled uselessly against Marcus' grip. The equipment built into his suit, all the controls and processors that let him coordinate the drone swarm, sparked and died under Marcus' Void corruption.
But Marcus' eyes were glowing now, that telltale sign that he was using abilities beyond the physical.
"You're not alone in this," Marcus mused. "I can feel them. Your whole team, coordinating from... let's see... three different locations. Nice operational security, spreading out like that. Won't help."
His eyes flared brighter.
Across the city, in three separate buildings, a dozen people suddenly froze mid-motion. Fingers stopped typing. Mouths stopped speaking mid-word. They stood like statues, locked in place by Void energy that had reached across miles to pin them perfectly still.
"WILL," Marcus called out, knowing the AI would be monitoring. "Notify the Avengers. We've got thieves to collect—multiple locations. I'll send you the coordinates."
The response came through Marcus' neural link almost immediately. Coordinates received. Teams dispatching now.
"Good." Marcus looked at the frozen Mysterio, then at the crowd of confused civilians. "As for you... I think Tony's lawyers are going to have fun with this case."
He took off, still holding Quentin by the throat, flying toward the Avengers Compound with the same casual ease most people showed while carrying groceries.
Behind him, the crowd erupted into chaos—half of them demanding answers, the other half already posting footage of the dramatic unmasking to social media.
Back at the compound, the Avengers watched the scene unfold with varying degrees of amusement.
"I love it when Marcus just cuts through the bullshit," Clint said, grinning. "No investigation, no careful evidence gathering. Just 'you're a thief' and boom, problem solved."
Tony was already on his feet, pulling up legal documents and contacting the Stark Industries legal department. "Oh, they're going to regret this. Do you have any idea how expensive those drones are? How much R&D went into them?"
"Tony," Steve said carefully, "maybe we should—"
"I'm going to sue them into the Stone Age," Tony continued, ignoring the interruption. "Then I'm going to recommend maximum criminal penalties. Then I'm going to make sure everyone knows exactly what happens when you steal from Stark Industries."
Natasha raised an eyebrow. "Feeling vindictive?"
"Feeling protective," Tony corrected. "Those drones could have done serious damage in the wrong hands. They did do damage—Mysterio used them to fake disasters, which means real emergency services were tied up responding to fake threats. People could have died because of this asshole's ego trip."
He had a point. The implications went beyond simple theft.
Peter swung down from his perch near the ceiling. "So what happens to them now?"
"Legal proceedings, probably jail time," Steve said. "And Tony's right—they'll face serious charges. Theft of military-grade technology, fraud, endangerment... the list goes on."
"Marcus is adding some insurance too," Bruce noted, watching the displays. "See that energy signature around the suspects? That's Void marking. He's tagging them, probably so he can track them if they try to run."
"Smart," Natasha approved. "Can't exactly trust normal surveillance on people who just proved they can manipulate detection systems."
Minutes later, Marcus arrived at the compound, still carrying Quentin Beck like a sack of potatoes. The would-be hero had given up struggling and was just hanging limply, the fight gone out of him.
"Delivery," Marcus announced, dropping Beck onto the floor without ceremony. "One fraud, lightly used. Your legal team can have him."
Tony stood over the fallen man, arms crossed. "You know what pisses me off most? You could have just asked. Come to me with a proposal, show me what you wanted to do. If the idea was good, I might have even helped."
Beck said nothing, his face a mask of sullen defeat.
"But no," Tony continued. "You stole from me. Used my tech to build a fake persona. Risked lives for what? Attention? Fame?" He shook his head in disgust. "Pathetic."
Security arrived to take Beck into custody. The rest of his team was being collected from their various locations, all still frozen by Marcus' power until they could be properly secured.
"I'll keep the Void marks on them for a while," Marcus said. "Just in case they have contingencies we don't know about."
"Appreciated," Steve said. Then, with a slight smile: "Good to have you back. How was your trip?"
Marcus considered the question. "Productive. Promoted my armor, dealt with a zombie outbreak, sent some refugees to a better universe. The usual."
The casual way he delivered that statement made several people stop and stare.
"Zombie outbreak?" Peter asked weakly.
"Don't worry about it. Parallel universe thing, already handled." Marcus waved off the question. "What'd I miss here?"
"Apparently, fraudulent heroes using stolen technology," Natasha supplied dryly.
"Well, not anymore." Marcus looked at the door where Beck had been dragged away. "Though this does highlight a security issue. If one team could steal that much equipment..."
Tony grimaced. "Yeah, I know. I'm already updating protocols. New tracking systems, better encryption, additional failsafes. If someone tries this again, I'll know immediately."
"Good plan."
Several Days Later
The Mysterio story dominated the news cycle for exactly one day before being replaced by the next crisis. That was New York for you—today's shocking revelation was tomorrow's old news.
Quentin Beck and his team faced a long list of charges. Stark Industries' legal department lived up to Tony's promises, pursuing every possible penalty with ruthless efficiency. The trial would take months, but the outcome was never in doubt.
More interesting were the unintended consequences.
Public awareness of Stark Industries' capabilities skyrocketed. People had known Tony made advanced technology, but seeing what could be accomplished by just stealing some of it drove home exactly how powerful those innovations were. Stock prices jumped. Sales of existing products increased dramatically.
Tony, naturally, was prepared for this. Every new product now included additional security measures—hardcoded limiters that would trigger if the technology was used for harmful purposes, alerting Stark Industries immediately. Not foolproof, but better than nothing.
The Avengers got back to their normal routine: training, monitoring potential threats, dealing with the endless stream of crises that seemed to target New York specifically.
And for a brief moment, things were quiet.
Then the weirdness started.
Three Weeks After the Mysterio Incident
Peter sat on the rooftop of the compound, legs dangling over the edge in a way that would give normal people vertigo. Wanda and Pietro sat beside him, the three of them enjoying a rare moment of downtime.
"I've been so unlucky recently," Peter complained, shaking his head. "Like, even more than usual, and my usual luck is terrible."
Wanda raised an eyebrow. "What happened?"
"Random enemies. People I've never seen before, but they act like they know me. Like they have personal grudges."
"Did you do it?" Pietro asked, curious.
"That's the thing—I have no idea what they're talking about! I've never met any of them before!" Peter threw up his hands in frustration. "And they're strong, too. Like, way stronger than random thugs should be. If I'd actually fought these people before, I'd remember."
It was genuinely bothering him. Peter had a good memory for faces, especially for people who tried to kill him. That was kind of an important survival skill in his line of work.
Wanda was quiet for a moment, then said softly: "I've been experiencing something strange too."
Both boys looked at her.
"I keep... hearing voices," she continued, her expression troubled. "Children's voices. Two boys. They call me 'mom.'"
Pietro's eyes widened. "You have—wait, what?"
"I don't!" Wanda said quickly. "I've never—I mean, I don't even have a boyfriend, let alone..." She trailed off, frustrated. "But I can hear them so clearly. They're scared. They're calling for help. They need me."
Her hands trembled slightly. "I can even hear their names sometimes. Billy. Tommy. My sons."
"That's impossible," Pietro said, but his voice was uncertain. His sister didn't lie, and she certainly didn't hallucinate.
"I know it's impossible," Wanda agreed. "But I still hear them."
The three fell into contemplative silence, each wrestling with their own confusion.
"So you're a mom?" Pietro said after a moment, trying to lighten the mood.
Wanda smacked his arm. "I just said I don't have children!"
"But if you have sons somewhere—"
"I don't!" Wanda insisted, but there was less certainty in her voice than she wanted. Because she could hear them even now, faint but present. Two young voices asking where she was, why she wasn't coming to help them.
It hurt in ways she didn't understand.
Peter shifted uncomfortably. "Okay, this is officially above my pay grade. Do we know anyone who deals with weird mystical stuff?"
"Doctor Strange," Wanda said immediately. "But he's always busy with—"
"With interdimensional threats and mystical catastrophes, yes."
All three jumped at the new voice. They spun around to find the entire core Avengers team standing behind them—Steve, Tony, Natasha, Clint, Bruce, and Doctor Strange himself, hovering slightly above the rooftop with his cape billowing dramatically.
"We've been listening," Strange said, his expression serious. "And I believe I know what's happening to you."
He floated down to stand with them properly, his hands clasped in front of him in that particular pose that meant he was about to drop significant mystical knowledge.
"The universe is pluralistic," Strange began. "That means there are countless parallel worlds where versions of us live out different lives. Alternative timelines branching from different choices, different events, different outcomes."
He gestured, and golden light formed between his hands, shaping itself into a diagram—one central line splitting into infinite branches.
"Sometimes, these parallel worlds don't interact. They exist separately, each one insulated from the others. But recently..." The diagram flickered, branches beginning to blur and overlap. "The barriers between universes have been weakening."
"Why?" Steve asked, ever practical.
"Information from Marcus is the dead of this Kang."
The diagram showed the branches interweaving, touching, bleeding into each other.
"What you're experiencing—Peter's enemies from nowhere, Wanda's children who don't exist—these are echoes from parallel worlds. Memories, events, and people bleeding through the dimensional barriers."
Wanda's hands clenched. "So they're real? My sons are real?"
"In another timeline, yes," Strange confirmed gently. "There's a reality where you did have children. Where you lived a different life. And right now, the barriers are thin enough that you're hearing across that divide."
"Can I help them?" Wanda asked immediately. "If they're in danger—"
"It's not that simple," Strange cautioned. "Reaching into other timelines, trying to affect events there... it can have catastrophic consequences. You might help them, or you might make things worse. You might even destabilize both realities in the process."
It was clearly not the answer Wanda wanted to hear.
Peter spoke up. "And the people attacking me? They're from other timelines too?"
"Likely. There are worlds where different versions of you made different choices. Perhaps in those worlds, you became a villain. Or you accidentally caused harm. Those versions of your enemies might be bleeding through, carrying grudges from events that haven't happened in this timeline."
"That's so messed up," Peter muttered.
"It's the multiverse," Strange agreed. "It's inherently complicated."
Tony crossed his arms. "So what do we do about it? Can we strengthen these barriers, stop the bleeding?"
"We're working on it," Strange said. "The Masters of the Mystic Arts are attempting to reinforce dimensional boundaries. But it will take time, and the damage may already be extensive."
He looked at each of them seriously.
"Until we fix this, you need to be prepared for more strangeness. More echoes from parallel worlds. People who know you but you don't know them. Memories of events that never happened. Emotional connections to lives you never lived."
The weight of that settled over the group.
"The universe is pluralistic," Strange repeated. "And right now, all those parallel possibilities are starting to touch. What you've experienced recently may just be the beginning."
He didn't add the more frightening implication: if people and memories could bleed through...
What else might cross over from darker timelines?
What horrors might be waiting in worlds where heroes fell and villains triumphed?
The multiverse was opening, and no one knew what would come through next.