Disclaimer: I do not own Batman or anything else you may recognize

Thank you to everyone who has favorited, followed or reviewed this fic so far.

Some of the chapters of this story are gonna be inspired by 5x9 of Arrow, including this one.

Also, I saw someone saying today on the Internet- "Thank God I'm an atheist." Uh, what?

Chaos Sorcerer: Holy thanks for the review, Chaos! You should be asking- "What the fuck is that card this guy has?!" Just wait for some footage to be shown. There probably was a mystical powerhouse, we will see. Did Dick even exist in DCEU? Just wondering. I think Jason was the only Robin in DCEU with how they presented it. No idea if Dick exists or not. What do you think? Just wait and watch. Sorry, and yes, he would be ancient. I actually like the idea of using that speech later, thanks a lot buddy. Yes, too lonely. No kidding. I was giving Robert a benefit of the doubt but this has me souring on him. I like the idea of the suits, and thanks for the suggestions. Thanks and glad the entire roast was savage. Glad that line gave you a laugh, LOL! And thanks for the review on 'True lovers at peace' as well. No kidding, they are milking it dry. Yes, they crossed a line, but when have they not? Glad you can get behind that. Yes, she would. Glad that was nice. Enjoy the chapter.

Agent N: Thanks for the review. Glad it was nice. Glad that was good. Yes, nasty indeed. LOL!

Panther-10: Thanks for the review. Glad this was great. Glad it was an amazing job. I like the 'Batmen Assemble' thing, thanks. We will see if I can fit it in. Actually, Keaton Batman had a variation of Batman Forever on his Earth for this story, and he was talking about Earth-38 Batman.

Jason Hunter: Thanks for the review. Yes, there will be talk later.

Guest 1: I get you like Batwoman, and want me to give it a chance, but I just can't, and it's not because of the writing or acting at this point. With Oliver gone, I am just not invested in the Arrowverse anymore. It went downhill a long time ago. All the shows jumped the shark together during the 2017-18 Season, and there is no going back now. And with how much Oliver was treated like trash, and even Barry, while the women are treated like they can do no wrong, the future Arrowverse shows are just not something I can stomach. So sorry, but I don't wanna watch it. I do have compassion, but the entire Arrowverse has used up all the chances I gave it, so I can't watch it anymore.

Guest 2: Thanks for the review. It's his card specifically. There is actually a difference which will be brought to light here. No idea. I have seen it, looks nice.

Guest 3: Thanks for the review and funny.

Chapter 4- Where it began

Unknown location

The Batman Who Laughs was using his card to sharpen a Batarang when he heard footsteps behind him and knew it was Slade.

There were pictures of all the Batmen, Catwomen, Deathstrokes, Robins and Titans behind them, stuck to the wall.

Slade had no idea how he had gotten them in such a short amount of time. Perhaps that card of his.

"I am going to kill the Titans", Slade said to him.

"You think you can make demands of me?" The Batman Who Laughs asked, not turning around to face him, and let out insane laughter. "That's funny."

"No, of course not", Slade said. While he would just love to carve this freak, he was dangerous with that card on him, and one wrong move by Slade would lead to his death. Or something worse.

"I just want to kill the Titans is all, you can kill the rest", Slade said to him.

"You haven't been listening", The Batman Who Laughs said. "I am not going to kill them."

He turned around and threw the sharpened Batarang. It whizzed past Slade and a 'thwarp' was heard.

Slade turned around to see the Batarang had struck right on the head of Batman.

"I am going make them wish they were dead, then give them a fate far worse than it."


Earth-38, Wayne Manor, Gotham City

Batman, Detective and the Titans listened as the others explained what had happened while they were gone.

"So he was dressed like us", Detective said as he gestured to himself and Batman. "But his face and smile was like Joker?"

"Yes", Bruce nodded. "And he had a Joker card on him too."

"Which could warp reality?" Batman asked and they all nodded.

"It looked like it", Wilson said, clearly disgruntled over losing to that freak.

"Where are the bodies?" Batman asked.

If Superman and Supergirl of his Earth were murdered, it wasn't gonna bode well for anyone.

They lead the two Batmen and the Titans to the Batcave, where the bodies were kept on a table, a few feet apart.

"They look like they are from this Earth", Catwoman said sadly, remembering she had met the two during the Battle of Earth.

Batman took one look at them and said. "They are not from this Earth."

"How can you tell?" Deathstroke asked.

"You all wouldn't know", Batman said as he looked at them all. "But our Supergirl started wearing pants some time ago, and this one is still wearing a skirt."

"Really?" Bruce asked and he nodded.

"I remember that other Supergirl and Carol told her to put on some pants", Detective remembered and some of the Titans had to chuckle at that.

"Okay, that is a very interesting way to tell two people apart", Dick said.

"It shows good observational skills, and it means he is keeping up", Kory told him to everyone's amusement while Batman simply sighed.

"I imagine if someone looking like me died, you would be able to tell me apart with the same kind of criteria, wouldn't you Batman?" Robin asked Bats.

"I will, Robin", Bats assured.

"It's not that hard", Rachel said as she looked at Robin's suit. "You don't wear pants either."

"And I think you should put on some too", Donna told him.

"I have lasted in this suit since before you were born", Robin said to her.

"I so wish I was Wonder Woman right now so I could disprove that", Donna said to herself.

"Wonder Woman?" Bats asked Donna curiously. "So the Woman of Wonder who when fighting breaks a tooth while using a Lasso of Truth exists on your Earth too?"

Everyone was silent for half a minute, just absorbing the way Bats and Robin talked, and then they burst out laughing, except Batman, Detective, Deathstroke and Wilson.

"What happened, young heroes? Is it something I said?" Bats asked as the laughter stopped.

"Yes, Wonder Woman exists on my Earth and trained me, and I am an Amazon too", Donna said. "They call me Wonder Girl."

"So you are like me then? A sidekick to a big superhero", Robin said happily, realizing he had found a kindred spirit.

"I was a sidekick, now I am a Titan", Donna said as she and Dick exchanged a look.

"Our Wonder Woman does have a Wonder Girl, but her name is Drusilla", Robin told them before turning to Dick. "You're Robin too, right?"

"I was Robin, now I call myself Nightwing", Dick said. "I am not a Robin anymore."

"There is another Robin on our Earth though", Kory informed.

"Tell me about it", Rose muttered, knowing Jason Todd all too well.

"Ah! I get it!" Wilson muttered as Rose looked at him with a wide eye.

"You are not my dad exactly, but you behave an awful lot like him", Rose said.

"Well, some things are probably the same everywhere", Wilson told her before his voice turned wistful. "Or were."

"Okay enough talk. Just because the Superman and Supergirl aren't from our Earth doesn't mean we shouldn't be careful", Batman said as he turned to the others, a grim look on his face.

"How powerful are Kryptonians?" Wayne asked, not knowing much about them.

"Very", Connor said as they turned to him. "I am half-Kryptonian, and", he looked at Donna. "I was told I can throw a punch."

He lifted the table, with both the bodies on it, with one hand, lifting it over his head, awing everyone who hadn't seen any Kryptonians.

He then put it back down as Gar said. "And this is nothing. I remember being on the wrong end of that power."

"Sorry about that, buddy", Connor said regretfully.

"So as powerful as Amazons then", Bats said.

"No", Detective said as they looked at him. "More. Much more."

He looked at Donna. "No offense."

"None taken", she shrugged.

"Some time ago, three Supermen, one of whom is from this Earth, were mind-controlled by their Lex Luthors, who is their arch-enemy on every Earth, into fighting each other", Batman said. "Take a look."

He turned on some footage and Bats, Robin, Wayne, Selina, and even the Titans were glued to the screen with wide eyes as they looked at the three Supermen battling in the air, using Heat Vision, throwing each other around, crashing buildings, flying at amazing speed.

Even the Superman on the Earth of the Titans hadn't shown this amount of power.

"This is nothing", Batman said. "Once they were freed from the mind control, one of the Lexes unleashed a powerful beast called Doomsday, which is also Kryptonian."

"That Lex was from my Earth", Detective told everyone. "He is the craziest out of all the Lexes."

"Take a look", Batman said as he showed more footage, and it showed many heroes trying to battle the giant beast that was Doomsday, who had protrusions sticking out of him.

On noticing Hulk battling Doomsday, Kory asked Gar jokingly. "Distant cousin?"

Upon seeing the green skin Gar replied with wide eyes focused on the Jade Giant. "Very distant."

"Who is that guy?" Donna asked as she noticed Steve Rogers battling Doomsday with Mjolnir in hand while sitting on Devil Dinosaur. "And where did that dinosaur come from?"

"Oh right! There is this Earth called Earth-199999, which is very powerful, and there is this team called the Avengers on it, and this man, Steve Rogers is their leader", Detective explained. "They adopted a resurrected dinosaur who had human level intelligence. And from what I hear, that world also has Merlin, Arthur and a total fantasy world called Middle-earth attached to it where fantastical stuff, well, exists as flesh and blood."

"Really?" Rachel asked, she and Gar looking rather excited about it.

"He is hot", Dawn said about Steve.

"Pause the brakes, you just broke up", Kory said to her.

"Admit it, you're attracted too", Dawn replied.

"All right", Kory admitted, looking sheepish.

"Well, I don't blame either of you", Donna said as she looked at Steve.

Then they noticed Steve using his shield, Mjolnir and Green Lantern Ring in tandem to battle Doomsday.

"Now he's got a Green Lantern Ring too?" Donna said, wide-eyed with a dropped jaw.

"Yes, a Green Lantern Ring ended up choosing him", Detective said.

"Now he's even hotter", Dawn said.

"He is in a committed relationship with this Earth's Wonder Woman", Detective said, shutting up the three women, who now looked embarrassed, to everyone else's amusement.

"Tell me, in all of your worlds, did people randomly turn to dust 4 months ago?" Bruce asked Wayne, Selina, Bats, Robin and the Titans.

"Yes", Wayne said as he and Selina remembered Gordon and their Robin turning into dust.

"I remember I had said- "Holy people returning to dust from which they had been made, Batman!"" Robin said, and this time, in spite of his way of speech, it sounded more terrifying than funny.

"Joker turned to dust right in my grip, and I wondered if I had developed the superpower of disintegration by touching, until I saw others turning to dust as well", Bats said.

"Our Joker didn't turn to dust", Bruce muttered, remembering his stunt where he had taken doctors hostage and dressed them up as his thugs while duct-taping their mouths and also guns to their hands.

"And he caused even more problems", Catwoman sighed.

"I remember", Dick said as he looked at his team sadly. "Gar and Donna were dusted."

"Hank too", Dawn said. While they had broken up, it was recent, and she still did care for him. She remembered some dust had entered her mouth while kissing Hank and she had opened her eyes to see him finish turning to dust, and had screamed in horror after that.

"We actually know how it happened", Detective said to them.

"On Earth-199999, there was this alien warlord called Thanos who collected 6 powerful Stones called the Infinity Stones that controlled an aspect of the Universe, or you can say the Multiverse", Bruce explained. "With all of them together, he was the most powerful being in existence, and when he snapped his fingers, he wanted to turn half of all life in the Universe to dust, only, half of all life in the Multiverse turned to dust instead."

"Until it was undone a few days later and Thanos and his ally, the Dark Lord Morgoth from Middle-earth, were defeated", Catwoman finished.

Wayne, Selina, Bats, Robin and the Titans looked shocked and horrified simultaneously as the explanation for that random but horrifying event sunk in, and it all made perfect sense.

"What happened to the Stones?" Wayne asked.

"Artefacts as powerful as that should never be left unchecked, lest they fall into evil hands. It is our job as heroes to ensure that", Bats said.

"They were split across the Multiverse by all the heroes involved in defeating Thanos and Morgoth", Batman said, deciding not to reveal that two of them were on this Earth due to Wilson being around, and unlike Deathstroke, this guy was a total mercenary like the one on his Earth, so him knowing such info wasn't in his best interests.

"All right, that was a nice history lesson", Wilson said sarcastically.

"But we need to find out more about this amalgamation of you and Joker", Deathstroke said to Batman.

"And he said he wanted you to meet him where it all began", Catwoman said, remembering.

"What could he possibly mean by that?" Batman muttered before he walked to his computer and started typing.

Ace Chemicals came up as Batman said. "The old Ace Chemicals manufacturing plant reports a heavy usage of water and power over the last few months."

"What does Ace Chemicals have to do with this?" Bruce asked.

"Looks like stuff regarding Joker isn't common on every Earth", Batman said. "That is where Joker was born. I know it now."

"It was the same with me", Detective said, his voice sounding pained. "He made sure to remind me."

Detective remembered finding Jason's dead body in the Ace Chemicals plant. He had beaten to death brutally by a crowbar, and on his suit was sprayed as graffiti- "HAHAH, JOKE'S ON YOU BATMAN."

"It happened on my Earth too, except it was at Axis Chemicals", Wayne said.

"Let's go", Batman said.

"Where?" Dick asked, grasping Batman by the hand, stopping him. "We know nothing about this guy. And he kicked all of their asses", he pointed at everyone who had been left behind. "Very easily. And are we even sure he is going to be at Ace Chemicals?"

"That's where it all started", Batman said, freeing his hand from Dick's grip. "That is where Joker was born, and that is the only place he is going to refer to in such a case."

He then walked out of the Batcave and after exchanging concerned looks, the rest followed.


Later, Ace Chemicals

A door burst open as Dick and Robin walked in together.

"We're in", Dick said.

"Copy", Batman's voice came via comms.

"Let us together take him down", Robin said.


A grapple hook was fired and in swung Batman, Detective and Bruce.

As they landed, Bruce asked via comms. "Kory, Donna, Catwoman, Connor, are you in position?"


"We are", Donna said as they stood at the position.

"If he gets here", Kory started.

"He won't get out", Catwoman finished.

"We got this", Connor said.


"Keep looking around", Detective ordered.


"Got it", Deathstroke said as he and Wilson walked around, looking at the surroundings.

"I will be able to hear if we get an intruder around", Wilson said.

"Yes, but he has that card", Deathstroke reminded.

"I don't care, I just have to take him down, return to my Earth, finish my job, get my cut, and go on a vacation", Wilson shrugged.

"That's all you do?" Deathstroke asked incredulously.

"It is much better than what you did", Wilson told him. Both of them had told each other a little about their pasts.

"When you had powers, you wasted them on a pointless vendetta, caused rioting on the streets of a city?" Wilson asked him. "You could have used your gifts like I did, become a mercenary."

"What happened to me affected my brain as well", Deathstroke told him.

"The procedure done on me was done right", Wilson told him.

"I doubt that", Deathstroke muttered.

"Well, what else can I do?" Wilson snapped. "I don't have anyone in my life."

Deathstroke looked at him in sympathy, realizing he had lost too much and didn't care much about anything except his vacations now.

"I have two sons, though one of them is in prison", Deathstroke said.

"I used to have two sons", Wilson said sadly as the two looked at each other, and understanding passing between them.

They were different, but both of them were who they were because they were haunted by their dark pasts.


Wayne and Selina were walking around, looking at the walls when Wayne saw that on one wall was written- "Have you ever danced with the devil in the pale moonlight?"

Wayne grunted in anger and punched that part of the wall, shattering it as Selina put a hand on his shoulder. "What happened?"

"He is screwing with me!" Wayne snarled.


Bats, Gar, Rose, Rachel and Dawn were investigating another area together as Dawn asked Bats. "Why do you guys talk like that?"

"Talk like what, Dove?" Bats asked.

"Holy Batman!" Rose said matter-of-fact.

"There are differences between all worlds, young heroes", Bats said. "For example, we do not use bad words like your generation does."

The four exchanged looks, stifling their giggles.


Batman, Bruce and Detective continued on their way, finding themselves on the spot where a thug had been thrown into the vat, and the Joker had emerged.

They saw a body lying on the ground, his head down. Detective quickly rolled him over to see it was a version of Jason Todd in his Robin suit, lying dead, a smile carved on his face while on the suit was written- "How many more jokes can you take before you become the Destroyer? HAHAHAH!"

Detective angrily grunted and punched the ground, forming a dent as Bruce found a rock and picked it up. On it was written- 'Finders keepers.'

Bruce pressed it in his fist angrily as Batman looked around, remembering.


Years ago, Ace Chemicals

The three thugs were running away as the GCPD fired at them, only for two of them to get shot down. As the third one ran, Batman suddenly landed in the way.

The thug tried to push past him in fear but Batman punched him, and it accidentally made him fall down into a vat.

The laughter Batman heard a few seconds later would haunt him for the rest of his life.


Now

The doors behind the three closed and they turned around to see several pale young boys in a Robin suit surrounding them, all of them having smiles carved onto them, all of them looking like zombies.

"What the hell?" Detective muttered as the three watched, horrified.

Then they heard footsteps behind them and whipped around to see The Batman Who Laughs standing there.

It was the first time Batman and Detective were seeing him, and their eyes were stuck on him for at least half a minute due to what he was.

"You're sick!" Batman snarled at him, disgust in his voice.

"Not as sick as you are going to be", The Batman Who Laughs said and laughed hysterically again. "You will be the sickest of us."

Batman flung a Batarang at him but The Batman Who Laughs threw his card. It hit the Batarang at the mid-point and sliced it into two before returning to the hand of The Batman Who Laughs.

And then all the Robins charged them just as Batman and The Batman Who Laughs charged each other.

Detective side-stepped to avoid a Robin and grabbing him, rammed him into another one as Bruce did a spin motion and kicked another away.

One of them grabbed him from behind but he took out a Batarang and jammed it into that Robin as Detective leapt into the air and kicked another one away into two others.

The Batman Who Laughs flipped and leapt onto Batman, sending him to the ground before punching his chest twice.

Batman then kicked him away and got up as his knee was kicked, slightly staggering him.

The Batman Who Laughs tried to punch but Batman ducked and got on his other side. The Batman Who Laughs tried to hit again but Batman kicked away his hand.

As The Batman Who Laughs tried to punch again, Batman grabbed his elbow and punched him there. He then grabbed him by the head and threw him across the bridge. The Batman Who Laughs fell on its other side.

As he got up, Batman leapt over the bridge and kicked him on the chest with both feet, sending him down again. As he tried to get up, Batman kicked him on the knee and he fell again. He tried to get up again but Batman did a spin motion and grabbed his head between his feet and flipped him to the ground.

This time, The Batman Who Laughs got up first and kicked Batman on the foot. He rolled away and got up too. The Batman Who Laughs tried to hit him once more with a punch but he grabbed his hand and punched him on the chest. He then backed off a little.

He tried to punch The Batman Who Laughs but he grabbed his hand and threw him across the bridge. He fell on the center of it. As he tried to get up, The Batman Who Laughs leapt over it and did a flip.

Batman looked at him, noticing something strange and familiar about the bottom of his face.

The Batman Who Laughs landed, grabbed him by the back of the neck, and threw him away.

Batman grunted as he slowly got up while Detective and Bruce walked up next to him, having taken care of the rabid Robins.

The Batman Who Laughs pointed his card at them and said. "Now you will be twisted and wrong as well. All of you."

Then his hand was hit by an escrima stick and the card fell down as Dick flipped and landed next to the Batmen with Robin.

"Let them go, you son of a bitch!" Dick snarled.

"Mind your language, we must set an example for the kids!" Robin said, making them all sigh as their opponent laughed hysterically.

"I wonder what you will say when you can speak only one language, mine!" He laughed as Dick raised his stick.

Then there was a gunshot and the stick fell away.

"What the-" He trailed off as an armored figure landed next to The Batman Who Laughs.

The figure straightened as the eyes of all of them widened in horror, especially Dick.

"Slade?" He questioned.

"I am here too", Slade snarled as he brandished his sword. "Like I said, I will kill all of you, Titans. You will pay for your sins."

Before any of them could react, The Batman Who Laughs picked up his card and tapped it, a blast of darkness sending them all back.

When they recovered, the two were gone, along with all the rabid Robins.

Then the door behind them opened and Wayne, Selina, Deathstroke, Wilson, Bats, Rose, Rachel, Gar and Dawn burst in together.

Catwoman, Donna, Kory and Connor were still holding their positions.

"What happened?" Deathstroke asked.

"He is gone", Batman said.

"With Slade", Dick added.

"What?" Deathstroke and Wilson went together.

"He has my dad with him?" Rose asked in shock. "Why?"

"He is working with your dad", Dick said grimly.


And we're done.

So here, all the new Batmen and Catwoman and Titans were made familiar with the one and only MCU Earth and the backstory related to Thanos and Morgoth and the Infinity Stones and some other stuff.

And of course, it was made like Arrow 5x9 here, hope that was enjoyed.

Also, the Wonder Woman on Earth-66 is actually the Lynda Carter version, as there are some crossover comics between Batman 1966 and Wonder Woman 1975 from what I hear.

And can someone please help me shorten the name of The Batman Who Laughs? It is tiring writing that again and again.

Hope everyone enjoyed and see you all next time with another chapter. Stay safe from the coronavirus ya all!