The world is saved at last. The Demonic Invasion of Earth has been stopped by none other than the Doom Slayer-also known as the Doom Marine, Doomguy, but in his parallel Earth he was once called William B.J. Blazkowicz III- who singlehandedly, with a little bit of help, defeated the Khan Makyr and the 3 Corrupted Priest of Hell from using Earth as a Trojan Horse to create Argent Energy for Khan Makyr's dying world Urdak but it came at a price:

Shooting a hole into the surface of Mars with the BFG-10K to get from the core to Sentinel Prime, though it felt good.

Losing all Sovereignty on Sentinel Prime.

And most of all, sacrificing Vega again but only leaving him on Urdak to get to and kill Khan Makyr. And it turns out that Vega was the Father of all creation. That... wasn't shocking to the Slayer, after reading all of the codex scattered throughout the multiverse. Kinda spoiled the magic.

But let's not forget that he defeated the Icon of Sin once again by stabbing him in the brain like before, but instead of rockets, with the Crucible and it will stay there for a long time to prevent that black hole to rise again. Unless someone has the ability to remove an energy sword from the head, or make the titan take it off his head.

But never the less, he doesn't regret it, not one single bit. Besides, he has another machine to talk to, Dr Samuel Hayden, or what's left of him, connected to the Doom Fortress.

Doomguy goes to the console to look out in the window and see no red markings on the Earth surface. Same thing he sees everyday, but still a relief to him, but something still bothers him, other than going back to hell and kill demons. He feels like he should be doing more for all like help rebuild someone's house, boost the economy, mow someone's growing-from-hellfire lawn. Hell, he'll feed a pet rabbit.

There's so much that could befit him to his fellow humans down below.

What?

He stood straight as he looks down to the surface as he sees a bright light down on where Paris is suppose to be.

"You found something interesting besides killing demons for a change," said Hayden through the the Slayer's intercom. "I detecting the exact thing you're looking at. It seems to be a energy shield dome, covering the rest of what's supposed to be Paris. I'm scanning the shield." Takes a minute for him to get the information. The Slayer walks to his nearby console for any news on Paris. Sweeping through the screen for about 40 seconds, nothing saying that Paris has a shield dome.

"This is strange," Hayden reply's. "It's not of UAC or any of it's competitors' design. It seems... Alien."

Doomguy isn't a stranger to Aliens but a shield over Paris is odd to him.

"And other scans show no demonic are makyr origin whatsoever, but judging-" All of a sudden the dome dissipates, as seen by the Slayer. "Looks like the city has been uninfected by the demonic invasion. How or why we did not see this earlier, but now that we have, it is now of most importance. I'm setting up the destination now."

As Hayden sets up the teleporter, Doomguy grabs his gear, his helmet, his guns and ammo. All straped and load, all he has to do is wait for the Hayden to give to go.

"All set, I'll give you more info on the way."

The Slayer presses the Portal activator and the portal. He walks to and through it and warps.

Once the warping was gone, he materialized on the other and barrel rolled out of the portal and aims his Friendly Super Shotgun for a perimeter check. He sees people screaming and running for safety. The portal dissipates behind him, so he turns around and aims his Super Shotgun at a french women with asian looks, blue hair and pigtails that is facing away from the weapon. She peaks with one eye seeing the perpetrator.

He lowers his weapon, in spite of the abnormalcy going around here and he was aiming at a civilian. The young women ran from the the tall green man into an ally.

Doomguy checks his surroundings: clear skies, sunny day, no damage caused by demons. It seems like this place has been untouched by demons. Very unusual.

"No demonic presents in the vicinity, not even any gore nests," Hayden informing the Slayer. "But I'm detecting some energy spike a few feet from-"

All of a sudden, Doomguy grunted as he was knocked to the ground by something hitting his head. He got up, turns his head around, and maybe he's imaging this or his head was hit so hard that it's hard to tell if he's having deja vu of the same girl who he pointed that Super Shotgun at because she is different and wearing what looks like a red nano suit with black poka-dots and a superhero mask carrying a yo-yo?

But he discarded that thought as he recolonizes his immediate situation he got himself into and aims the Super Shotgun at her. For the first time in his life, he was dealing with some superhero?

"YOU!" The superhero said. "DROP THAT WEAPON!" The Slayer doesn't want to fight another human being, with the exception of his CO back at his old dimension-though he would make that exception if there was an equivalent on this Earth-so he's going to do something he haven't done for an eon: open his mouth.

And he still knows how to like it was yesterday-a long yesterday-since he was blessed by the Seraphin.

He lowers the Super Shotgun. "Ahem Ahem AAHHHHEEEMMMM!" The Doom Slayer clearing out his throat loudly, coughing a bit. "Excuse me, little girl..." This not only shocked Hayden, who he is still monitoring the Slayer's every movement, but the Slayer Himself; his voice got a little deeper than before the Serapin. He continues, "I'm on official business investigating why this city has been untouched by the forces of Hell. You can mind starting to tell me who you are first?"

"I am Ladybug," the superhero says.

Then, with ultra-instincts, the Slayers turns his back and sees another Black, cat-like figure land just a few feet from him. This time he sees a male character, in what is suppose to be a cat suit and ears not attached to anything but the dude's messy blonde and a golden bell where the neck is. The Slayer doesn't see it.

The black superhero begins to speak. "And I'm-"

"Don't tell me..." The Slayer interrupts. "Captain Gimp Cat?" He laughs to himself, he still got that sense of humor he still has from that time he said one-liners to the demons before killing them.

"What- NO!" The Man-Cat said. "I'm Cat-Noir. You probably know our names by now. And you are?"

"The Doom Slayer." The name sent chills down to Ladybug's and Chat's skin like they never heard of a akumatized individual before. " And look, I just want some answers about..."

Without knowing, the red figure, Ladybug throws her yo-yo at the the Slayer's right arm, where his Shotgun was, in reaction to her instincts that this akuma could be a serious foe. The Yo-yo wrapped around the arm and she begins to pull. The Slayer grunts and struggles to gain control of the Shotgun and his arm. "Cat-Noir!" Ladybug yells directly to Chat. "The Akuma must be his helmet!"

"Wait, what's an Akuma?" The Slayer questions.

"Got it My lady," Chat responds. "CATACLYSM!" Chat summons his power and lechers towards the Slayer.

The Slayer had never seen power like that, but that wasn't on his mind.

If it has to be this way, then fine. But I'm not going to kill them. The Slayer thought to himself. He activated his wrist-mounted blade and began to slice the yo-yo's wire from his arm. The cord severed, sending Ladybug backward to the ground.

Then the Slayer dodges Cat-Noir's attack by jumping over him. Chat's powered hand made contact with the ground accidentally causing a the ground to collapse and he fell through, yelling till he made contact with the sewer.

Luckily he fell to the walking-side area and not the sewage river. He didn't want Ladybug to smell him like a out-of-order toilet. When he got up, he knew it was time for payback.

"AWWW MAN!" Chat exclaimed, holding his nose. "This place smells lik-"

"Shit?" Before he extended his staff, he spots an overweight man, with a messy orange prison suit and some kind of contraption on his head, next to and speaking to him.

"Hey man, you were lucky. Things can't be said anything about me, though. I had to get all of the piss-infested shit off of me with dried toilet paper, making me covered in more putrid anus puke. That's puke that comes out of the anus, and is putrid."

Chat was dumbfound by what this guy said. But what came next made no sense.

"Oh, and uh..." He pulls out a desk bell and pressed the bell making a ding. "What sewer count number are we on? I forgot. The smell here killed most of my brain cells."

Chat shakes his head frantically, snapping back into reality, and extends his staff, propelling himself upwards and back to the surface, landing on the brick ground. Back in the fight, he see his partner trying to punch and kick the Slayer, but he keeps dodging by dashing faster than light, it looks like.

Chat extended his staff into baton size and charges at the Slayer. The Slayer quickly notices and activates his wrist blade, countering the attack blow that caused some sparks.

Ladybug lurches at the Slayer, trying to super flying dropkick, but fails as the Slayer manages to grab her leg and swings her like a bat to Chat knocking both of them into each other, having both of them hitting the ground at the same time.

Now that the two "superheros," as they were on the ground and on top of each other, the Slayer goes right to them but first, he picked up Ladybug's weapon that was a yo-yo which he cut the cord from. To be fair, this was suppose to be his way of apologizing by giving the yo-yo back to her and at least to tell them that he was on their side, but that could have gone as planned if the local law enforcement didn't show up.

Three squad cars pulled up, the policemen got out in a pair of twos making six first responders. They were stopped in their tracks as they were stunningly horrified by the very tall green figure they are witnessing. They pulled their glocks out in instinct and aimed at the green man.

As Ladybug regains her consciousness, she realized she was on top of Cat-Noir, who was still knocked out. Wow, glad he didn't compliment on this close encounter, she thought.

She does eventually turn around and see policemen aiming their guns at the Slayer. "NO!" She yelled at the policemen. "DON'T SHOOT!"

They Ignore her. The started firing, trying to empty their clips on the green figure. The Slayer feels the bullets penetrating his armor, though it wasn't doing anything serious till he felt one hitting his exposed arm. Still painful like the demons finally trying to kill him, but luck was on his side except the time he was sealed for eons.

He did not want to kill a cop because... well he was a military man. So he uses the Super Shotgun's meathook to hook on the nearest building. He feels the shotgun vibrating with a tug meaning the meathook hit something as the Shotgun retract the hook and the Slayer automatically was flying out of there with Ladybug's yo-yo.

"Darn it," Ladybug cursed out. "Now he got away and hes got my yo-yo."

"Ugh..."

Ladybug looks down at Cat-Noir, finally regaining consciousness. "Chat, are you all right?"

"I don't know- HEY!" Realizing the situation "Where is akuma?"

"He got away and hes got my yo-yo."

"Well that'a not good, without your yo-yo we can't stop the akuma."

"I know." Ladybug was disappointed in herself. "That's why we need to find him."

Then Chat's ring was beeping. He was about transform back. "Dang it." He got up quickly. "I need to recharge, see you in a minute." He grabs his staff extend it to po go out of the vicinity.

Wow, that was quick, she thought. Then she notices something on the ground an inch from her left foot. She picked it up the furry object that had a clip-on chain. It turns out to be a rabbit's foot. Why would he be carrying this? It looks like it's not where the akuma is?

"HEY YOUNG LADY!" A policemen yelled at to her. "WHO'S GOING TO CLEAN UP THIS MESS?" She looks at where the policemen was pointing at and was the disintegrated road.

"Oh," she exclaimed.

"Don't mind me I wasn't here when it happen," said a voice down in the hole. "Also is a hotel nearby I can go to that is better than this shithole of a catacomb of shit?"