The corrupted Alien X towered over the gathered Ben Tennysons, its three faces contorted in expressions of pure malice. The very air around it crackled with unstable energy, threatening to tear reality apart.
"This… this is impossible," Ben muttered, staring in disbelief at the monstrous Celestialsapien. "How could it control Alien X?"
"The Carnitrix warps everything it touches," Ben 10,000 replied grimly. "Even the minds of Bellicus and Serena. We have to stop it, before it destroys everything."
The corrupted Alien X unleashed a wave of cosmic energy, obliterating the already ravaged landscape. The alternate Bens scattered, desperately trying to evade the destructive force. Atomix, Ben, charged forward, his body radiating with nuclear energy.
"We can do this!" he yelled, launching a concentrated blast of atomic power at the corrupted Alien X. But the attack was futile. The energy dissipated harmlessly against the Celestialsapien's immense power.
"Pathetic," the corrupted Alien X boomed, its three voices blending into a single, terrifying chorus. "You cannot comprehend the power I wield. I am beyond your reach."
It raised its hand, and a portal opened, sucking in several of the alternate Bens. Their screams echoed through the wasteland as they were pulled into the unknown abyss.
"No!" Ben 10,000 roared, charging forward with his own unique brand of alien fusion. His body shifted and changed, becoming a monstrous hybrid of Cannonbolt, Diamondhead, and Upgrade. He launched a barrage of diamond shards and explosive energy at the corrupted Alien X, but even his combined powers were not enough.
The battle raged on, a chaotic dance of cosmic energy and alien might. The alternate Bens fought valiantly, but they were outmatched. One by one, they fell, their bodies broken and twisted by the corrupted Alien X's power.
Ben watched in horror as his alternate selves were slaughtered. He knew that they were running out of time. If they didn't stop the corrupted Alien X, the entire multiverse would be consumed.
Suddenly, an idea sparked in his mind. A desperate, last-ditch effort. He remembered Professor Paradox's words: *"The Forge of Creation… the birthplace of Alien X."* If he could somehow reach the Forge, maybe, just maybe, he could find a way to defeat the corrupted Alien X.
"Paradox!" Ben yelled. "Can you get me to the Forge of Creation?"
Paradox materialized beside him, his face grim. "It's incredibly dangerous, Ben. The Forge is a place of raw, untamed power. But… it's our only hope." He tapped his pocket watch. "Hold on tight."
The world twisted and warped around them as Paradox opened a portal to the Forge of Creation. They emerged into a realm of pure energy, where the very fabric of reality was being woven and unraveled. Giant, ethereal beings floated through the void, their forms constantly shifting and changing.
"This is it, Ben," Paradox said. "The birthplace of the Celestialsapiens. But be warned, the energy here is incredibly volatile. You must be careful."
Ben nodded, his eyes fixed on the corrupted Alien X, who had followed them through the portal. "I know what I have to do."
He activated the Ultimatrix, his hand trembling as he dialed the sequence. He needed the ultimate power, the power to rewrite reality itself. He needed Alien X.
The transformation was agonizing, more intense than anything he had ever experienced. His body felt like it was being torn apart and reassembled at the atomic level. But he held on, focusing his will, channeling all his grief, his anger, his determination into the transformation.
Finally, the light subsided. Standing in its place was Alien X. But this was different. This was Ultimate Alien X. His form shimmered with raw, untamed power, his three faces radiating an aura of near-omnipotence. This was his last stand.
Bellicus and Serena argued in his mind, their voices echoing through the cosmic void. *"We cannot interfere! This is too dangerous!"* *"We must protect the balance! We cannot risk altering reality!"*
Ben fought to maintain control, to silence their squabbling. "I know the risks," he thought. "But we have to try. We have to save them."
With a surge of will, he forced Bellicus and Serena to listen, to see what he had seen, to feel what he had felt. He showed them the burning faces of Gwen and Max, the desolate wasteland of the destroyed Earth, the countless alternate Bens who had sacrificed themselves for the sake of the multiverse.
Slowly, hesitantly, Bellicus and Serena began to understand. They saw the destruction, the despair, the utter hopelessness of the situation. And for the first time, they agreed with Ben.
Together, the three minds channeled their power, focusing it on the corrupted Alien X. A beam of pure cosmic energy shot forth, engulfing the monstrous Celestialsapien. The corrupted Alien X screamed, its body convulsing as the energy tore through its corrupted form.
The beam intensified, growing brighter and hotter until the corrupted Alien X imploded, collapsing in on itself in a blinding flash of light. When the light subsided, the corrupted Alien X was gone. Vanished from existence.
But the battle wasn't over. The Carnitrix, freed from its host, was still active, its malevolent energy pulsating through the Forge of Creation. It was a threat to the entire multiverse, a cancer that needed to be excised.
Ben, as Ultimate Alien X, knew what he had to do. He focused his power, channeling the energy of the Forge, the energy of creation itself. He reached out to the Carnitrix, not with violence, but with compassion. He showed it the beauty of life, the potential for good, the interconnectedness of all things.
For a moment, the Carnitrix hesitated. Its pulsating energy flickered, as if struggling to comprehend the alien concept of hope. Then, with a final surge of defiance, it unleashed a wave of corrupted energy at Ben.
Ben braced himself, preparing for the impact. But the energy never came. Instead, a figure stepped in front of him, shielding him from the blast. It was Ben 10,000.
"Go, Ben!" he yelled, his voice strained. "Finish this! I'll hold it off!"
Ben watched in horror as Ben 10,000's body began to disintegrate under the Carnitrix's attack. He wanted to help, to save him, but he knew that he couldn't. He had to focus on the Carnitrix, on ending this nightmare once and for all.
With a heavy heart, he turned away, channeling all his remaining power into a final, desperate act. He reached out to the fabric of reality itself, bending it to his will. He rewound time, undoing the damage that the Carnitrix had caused, restoring the worlds that had been destroyed, bringing back those who had been lost.
But the power was too great, the strain too immense. He could feel himself fading, his consciousness dissolving into the cosmic void.
As he faded away, he saw a vision of a new Earth, a world untouched by the Carnitrix. He saw Gwen and Max, alive and well, smiling at him. He saw Ben 10,000, standing tall, a beacon of hope in the darkness.
Then, everything went black.