Author's note: Behold, my SECOND crossover fanfic! :D

This time, I'm not alone for it. Here, I'm teaming up with my Hotmail friend, Reece Wooldridge, to bring you guys a crossover that you may consider to be interesting and kinda funny at the same time. For we're crossing over Batman and Miraculous Ladybug! ^^

It's gonna be funny, dark and feature all of your favourite characters and I can promise you, me and Reece are putting in only our best effort into making this a crossover delight for all you readers!

Hope you enjoy! :D

Prologue: Fragile Peace

Gotham Airport was on high alert. It had to be given the kind of city that Gotham was. Corrupt, wild, ridden with crime, it was practically suicide to be low-rate security level in anything, ESPECIALLY the airport.

The facility boasted some of the finest security one could muster up from metal detectors o full on strip-searches and even highly sophisticated scanning equipment that could show off any tell-tale signs that somebody's luggage contained a bomb or some other terrorist weapon. Nobody could get onto a plane without anybody finding anything wrong. It was a security heaven for the Gothamites who wished to board a plane and fly to their holiday destination. Gotham Airport hadn't had any incidents in months ever since security had improved, meaning that it was one of the safest places in the entire city. It helped how WayneTech had even provided much of the equipment that the airport security staff used to see if they were dealing with innocent travelers or sick, twisted terrorists.

But even the best security in the world wasn't going to stop a certain individual from leaving the city. As a blonde-haired Asian woman had her luggage scanned, a strange man walked up behind her and awaited his turn. He had a heavy stubble that would soon become a beard unless he shaved anytime soon and wore dark purple glasses that obscured his eyes. He was dressed in heavy black clothes and a black trucker hat. He looked like he was about to go on vacation. In reality...he was merely hiding away until it was time to make a comeback.

The man was one of the most feared criminals in the entire city and one of Gotham's most wanted by the GCPD. He was known as Edward Nygma...but was better known as the sinister criminal known as "The Riddler". He was so-called due to his obsession with puzzles and games, which he used solely for the purpose of proving how intelligent he was. Instead, it just made him obsessed and pathetic. He had been foiled recently due to Gotham's famed Dark Knight and was catching a plane out of the city to go into hiding. He needed some time away to plan his next move...

The Riddler chuckled quietly, making the young woman in front of him turn around, deep brown eyes looking questioningly into his emerald ones "What's exactly funny, mister?" Though her tone was sharp, it was curious too, something the Riddler loved all too well coming from an ordinary person. Unlike the undying curiousity of Gotham's famous dark protector, who constantly beat him at his clue games.

The stubble faced man merely beamed and playfully scratched his own face. "I do apologize. Just remembered something funny from a TV show of mine. That and I'm looking forward to getting away from here."

To his own surprise, the frown faltered on the woman's face, now one of a softer look on regarding him, "Ah yes. If you're leaving for good, I don't blame you. Gotham's a hellhole as far as I'm concerned."

"Can't help but agree with you. I myself, I'm looking at some places in Paris where I can set up business. Rather lovely city, wouldn't you agree?" he replied lightly, making sure his polite facade didn't slip to reveal his all too familiar geeky and edgy nature.

The woman put on a light smirk "It's the city of love, what else is there that's so beautiful? Anyway, it's your turn now. Might see you on the flight, mister." With that, she turned on her heels and paced away from the security check, eager to get on her awaiting plane.

The riddle-obsessed criminal watched with a dirty smile on his face. What fun it was to be in plain sight of people and not be recognized! Those poor, stupid apes would feel really sorry when they found themselves a victim of his games once more, realizing that they were looking at him the whole time!

Now it was his turn, the Riddler placed his suitcase down on the treadmill and watched as it was taken through a small tunnel that scanned it for signs of anything suspicious. They would find nothing. Nygma hadn't packed anything that would raise the alarm with him. He didn't need to. The blank-faced, unsmiling staff member watched as the suitcase went through. No alarms were raised, it was clean. It could go through. She looked back at the Riddler as he handed her a passport, faked of course but not like this puny-minded woman had any chance of realizing that. She took one look at the passport, which identified him as "Justin C. Lue", scanned it and then handed it back over to the disguised criminal.

"Off anywhere special?" she asked bluntly.

"Somewhere very special..." The Riddler purred, "A pretty place the French like to call Paris."

"Lovely." the staff manager muttered. She looked bored and half-asleep, "Hope you have a nice holiday Mr. Lue."

"I intend to." the Riddler replied.

He strutted past her after his suitcase came out of the tunnel, taking hold of it with a firm grip. He flashed the worker a sly wink and a curt nod "You look very bored, might I say?" He always loved poking fun at bored looking people, especially those that didn't like their jobs. He honestly couldn't help it, as he always loved to peck away at the nerves of the dumb, idiotic people that were just plain fed up with what they were doing. Certainly weakened their brains, no doubt.

"Gee, ya noticed?" She rolled her eyes in response to him, before looking at him up and down "Well, Mr Lue, have a safe flight. Enjoy your time out in Paris and whatever else you'll be getting up to." She said in a plain bored tone, almost getting tired having to say nearly the same thing to the people she had to check. She looked like she wanted something big to happen, something the Riddler found all too interesting.

However, he had other things that acquired his powerful mind, and a bored looking security worker was the least of his interest. Though he couldn't help but rub some salt into the wound as he gave her another curt nod, "Enjoy the hellhole, miss." With that insult thrown in and done, he strutted ahead, going towards his destined flight.

But unbeknownst to the Riddler, there was somebody at the airport who was a lot sharper than the woman checking the suitcases. One of the guards who was on patrol had listened to the conversation between the two and despite having his doubts at first, had managed to recognize the Riddler. The disguise had been good but the poor, obsessed fool couldn't keep his personality under wraps enough to hide it. That had given him away.

Behind the wig, sunglasses and fake beard, Dick Grayson grinned to himself. Boy Batman had come up with the right idea to go undercover to see if they could find out where Edward Nygma was running away too! As the Riddler left to board his plane, Grayson, also known to the city outside the airport as Nightwing, took out a phone, dialed a number and put it to his ear.

"Hey Bruce? It's Dick. I've found him..." he informed.

Pairs, France, many miles away...

The city of Paris was entering its late afternoon time, but nothing could take away the fascinating beauty of the city, not even the lowering sun in the sky, with the skies covered with a red and orange glow, giving the city more of it's magical feeling. But of course, this city had seen quite a lot of battles lately, but thankfully none of them ended with any deaths. In fact, everything was being kept under quite a lot of control, especially now that the city had two magical guardians looking after. They were young, but they were simply the best and were up to the test.

One of them was walking home right now. School had ended an hour ago but the young teen girl hadn't quite gone home yet. She had called her parents to say that she was going to be roaming the city for a while to stretch her legs. Of course, she'd gotten the typical response of "OK honey but be home by dinner". It was why she was on her way home now.

The girl's name was Marinette Dupain-Cheng. She had a French father and a Chinese mother, hence the two surnames, and seemed like your average teenage girl upon first glance. She was quite attractive for her young age, already being the eye of at least a couple of boys at school, with striking blue eyes and blur hair tied with two pigtails. She was also notoriously ditzy, especially in front of her crush, Adrien Agreste, and known to be very clumsy. Despite these traits, she had a secret that nobody in Paris could possibly know about her. She was the famed superheroine known only as Ladybug.

Chosen to be the next bearer of the Ladybug Miraculous, Marinette became the magical superheroine who was responsible for saving Paris from so much catastrophes in the past. It helped how in France, the ladybug (or ladybird as known in some countries like the UK) was seen as a good luck charm. Paris knew that whenever Ladybug showed up, only good could come from it. And to think all Marinette had to do to become this magical deity was to wear a couple of earrings and call out for her kwami, a small magical creature that granted the powers she possessed as Ladybug.

For now, she was just Marinette for everything was at peace. No need for Ladybug to come out yet. As she passed the iconic sight of the Eiffel Tower, she glanced down in her bag where her kwami was hidden. It was a small pink creature with large, cutesy blue eyes set in a large head that sat upon a small body and limbs. It was female and known as Tikki.

"Comfy in there or do you need a bit of air?" Marinette asked, making sure she wasn't being overheard.

"I'm OK though if you want, you can leave your bag open a little." Tikki replied sweetly.

Marinette beamed sweetly at the Kwami and petted her head very gently with the tops of her two delicate fingers, being ever so soft with Tikki, treating her as if she were a baby mouse that was only a week old "Anything for you, Tikki." She said quietly as she left the bag unzipped a little wider, but thankfully no one would be able to peek inside it. Sure, Marinette had one or two incidents were Tikki was spotted, but she somehow managed to pass her off as a little kitten or a tiny doll she had, so she was grateful for that. Marinette sighed contently as she took noticed of calm things were this day. In fact, the last few days were very peaceful and was one of those times were it was simply ordinary, as how the Miraculers sought to see it be.

"Something's peeked up your attitude, Marinette. What's up?" Tikki politely asked, her big eyes curious about what had gotten her holder's mood more uplifted, "Is it to do with Adrien?" She added with a giggle, taking in delight at the deep shade of pink that flashed on Marinette's cheek.

"Heh, not exactly, Tikki. It's just...things seem so ordinary since Saturday. Not an Akuma attack in days. I hope I'm not offending you by saying this..." the young girl explained before trailing off. She hated it if she were to have hurt someone, directly or idirectly.

"Why would I be offended? We fight for peace, Marinette, and we've managed to achieve it." Tikki softly explained.

"I didn't want to make it seem like you were...you know; a tool, like I wouldn't need you anymore or not take notice of you" Marinette responded, her crystal blue eyes looking down to meeting with Tikki's.

The Kwami chuckled "Oh Marinette, you worry too much. You don't treat me as such a thing, and I always cherish the peaceful moments the city has. Besides, I bet Hawk Moth has decided to take a break. Even he needs to find some time for himself."

"I wouldn't have thought Hawk Moth even knew what "spare time" or "time for himself" even is." the teen snickered, "I still wonder where he could possibly be though. He's well hidden and because of this, we won't ever be able to arrest him and take away his Miraculous!"

She could feel a twinge of fright creep down her spine as a horrible thought of Hawk Moth making Paris miserable forever loomed in her mind. Seeing she was distressed, Tikki decided to try and ease her friend's fears.

"Don't worry Marinette. We WILL find him and we will put a stop to his crimes." she insisted, "No criminal ever gets away with what they do forever."

"History lessons at school will tell you otherwise I'm afraid." Marinette sighed.

She thought back to her history lesson earlier today. They had studied about British history, namely the time of the dark, mysterious killer known as Jack the Ripper. She had jokingly thought in her mind that he could've been a Victorian akuma victim but had been disturbed about the fact he had murdered several women and had never been caught for it. Would Hawk Moth follow the same path? Would he be the next Jack the Ripper, a criminal who lived with the crimes he committed and died unpunished for them? It made her shudder to think about it.

Tikki understood and tried once again to ease her friend's worries.

"Nearly every villain I've come across on this world Marinette is always unmasked and brought to justice. You have the power of good luck inside you, and as long as you Chat Noir are around, Hawk Moth will always get us butt kicked, no matter what. We will defeat him someday, Marinette, and who knows? It could be tomorrow, or the day after." She said with a positive smile on her face.

Marinette beamed in return, seeing that sweet smile on her friend's cute little face always satisfied the young baker's daughter "That's probably true, Tikki. And hey, he can't live forever, so that's something to be positive about. Who knows? He could just give up one day." She elaborated, which Tikki nodded in response to

"Yeah, you never know." She brightly said.

Elsewhere in Paris, not too far from the school he always loved going to, Adrien Agreste was heading towards his limo as he spoken to Nino, who was seeing him to his vehicle. For a young boy of just only fifteen, Adrien was very good looking, catching the eyes of nearly every girl he came across,. Then again, nearly everyone in the whole country recognized him, given he was a model for his father's fashion company. Dresses quite ordinarily compared to the usual rich kid, clad in blue pants, orange converse trainers, a black t-shirt with several coloured lines streaking across his chest, and an open white shirt, Adrien was clearly not the stereotypical rich boy that the media would often brag about.

His personality didn't even match the stereotypical rich boy either, not once being stuck-up or arrogant about his wealth. In fact, he was more along the lines of a lonely rich boy, feeling isolated from the world due to his overbearing and overprotective father. The fact he'd even allowed Adrien to attend this school was something of a miracle and he had made some good friends at the school such as Nino and Marinette. He sadly had to put up with the over-clingy nature of the rich spoiled brat known as Chloe Bourgeois, the one person who saw him as a trophy and nothing else, but his school life was still pleasant enough and made his life less lonely as a result.

"See ya tomorrow Nino." the rich boy said as he got into his limo.

"See ya tomorrow dude!" Nino replied, "Have a radical evening Adrien!"

Nino was the sort of boy who seemed to be behind a few decades with his speech, often speaking in outdated slang terms and 90's quotes but Adrien didn't mind. It gave the other boy a sort of charm that he couldn't help but like about him. As Adrien closed his door, the limo started up and drove away from the school, heading on home to Gabriel's mansion.

The teen model sighed a little as he lay back in his soft, leather seat. With any luck, his father would actually be around to hear how his day was, something that didn't happen very much in his life. Gabriel maybe his father but Adrien had spent so little time with him and even knew so little about him that he almost felt like a stranger to him. Why had his mood soured so much since the disappearance of his mother? Would he ever be happy again with this tragedy still lingering over him?

That was when, however, a tiny dark figure poked his tiny head out from Adrien's chest pocket. He was like a baby kitten with an oversized head, with green eyes and feline like slits in it. This was a reminder of Adrien's other life and that brought a small smile to his handsome features. All of Paris didn't know this and could never know this, not even his own father could know (like he'd believe it anyway).

For Adrien was secretly Ladybug's crime fighting partner, Chat Noir. As Chat Noir, Adrien was able to feel free and slip into that of a brighter and energetic being, being able actually make a difference in the world and work closely alongside his lady, whom he had developed feelings for ever since he met her on that day when they battled Stoneheart. Throughout the world, black cats were always seen as bad luck, so whenever Chat Noir would arrive in battle, it meant the bad guys were about to get their villainous act finished in a bad way. Interestingly, though, he didn't actually do that well in fighting. Sure, he knew fencing and was a good acrobatic, but Adrien always struggled against his foes. He had the strength to overcome them...but he was scared he'd go too far.

Back to the subject that raised its hand though, This Kwami was called Plagg. He was the polar opposite of Tikki in terms of character: he was very laid back, on the borders of being lazy, tired, and constantly hungry, most especially desiring Camembert Cheese, which Adrien hated due to the smell it gave off. Plagg sighed and stretched his tiny arms.

"Mmmm, another day at the horror office over with. I'm starving."

Adrien was grateful the soundproof window in the limo's midsection was down, that way his large driver wouldn't be able to hear the conversation, "I know, Plagg, but you'll have to wait a little bit longer for that cheese. There's bound to be a bit of traffic on the way back." He said quietly as he gazed out of the window, seeing the school shrink in the distance.

Plagg cocked an eyebrow at him "Dude, lighten up for crying out loud!"

"Lighten up? I'm just saying what's gonna happen that's all." Adrien protested.

"Say, you glad that this whole Hawk Moth business has calmed down considerably since the last akuma incident?" Plagg suddenly asked, "I am. Means more time for fun and relaxation!"

"Trust you to think about taking it easy." Adrien snickered, "Although I can't argue with the fact I am glad we haven't heard from that creep in a while. It's nice to see Paris looking so peaceful for once, no akumas to ruin our day."

"But at the same time, no Ladybug to show up and brighten your day." the feline Kwami noted.

Adrien nodded. That was indeed true, Ladybug hadn't shown up since Hawk Moth had gone quiet. Why would she need to? Ladybug's role was to capture akumas so if there was no akuma to catch, Ladybug had no reason to show up. The blonde boy sighed as he thought about his superheroine love interest. Would he ever see her again? And would he ever find out who she was?

He was always so insistent that they reveal their identities to each other. It's almost been a full year since they met each other, and they had grown quite close to each other. There were times where Adrien felt like he was more of a burden to Ladybug than being of any help, but she always told him she couldn't have gotten to where she was without him. Adrien let out another sigh as another thought came to him, but instead, escaped his mouth,

"You know...what will happen when this all comes to an end?" He said aloud, making his Kwami cock his head in confusion.

"How'd ya mean, pal?"

"You know, when we finally defeat Hawk Moth, what's gonna happen then? After he's been caught, will Paris really need Ladybug and Chat Noir anymore? Will Ladybug go away...forever?" Adrien explained, his voice growing distant as he pictured Ladybug swinging into the sunset and never coming back, her job done and no more magical threats to bother the beloved city.

"Look Adrien, if there's something I forgotten to tell ya, it's that you'll always be needed. So what if Hawk Moth will be gone? Doesn't mean all sorts of criminals are gonna stop for good. There'll still be thievery, attempted murder, kidnapping, and who's gonna be there to stop it? You AND Ladybug. You won't see her swinging off to the ether just yet, dude. She's gonna stick around for a while." Plagg insisted

Adrien smirked after taking these words in, before smoothing Plagg's cheek "If only you were like this all the time, huh?" He playfully teased, to which Plagg pulled away and pouted. He wasn't one to be treated like a cuddly little toy

"Hey! For your information, reader's magnet, I am a Kwami and I have great wisdom. I just have a lot of love for food, that's all." he scowled.

"I never would've guessed given how little of it you usually display." Adrien snickered teasingly.

"Hey!" Plagg retorted, his voice mostly full of humour rather than offence.

Meanwhile in Gotham City, somebody was loading up their private jet with supplies needed for the long journey ahead. Said long journey was a journey from here to France. The person who was preparing to leave was somebody who was far richer than even Gabriel Agreste himself was. That somebody was the billionaire CEO of Wayne Enterprises and also Gotham's Dark Knight himself...Bruce Wayne.

During the day time, he ran Wayne Enterprises, a huge company that covered many fields and had many branches on the tree of business it had grown to become over the years. But night time was a totally different story for Wayne. When the sun went down and the world was blanketed in darkness, he became the crime-fighting vigilante known to many as Batman. He was pretty much Gotham's only hope against the uncontrollable cesspool of crime it had become when he put on the mask, proving to be a very adequate fighter, strategist and detective all at once. He had put up with a lot of things that would normally drive any normal man insane. But Bruce Wayne wasn't any normal man.

And right now he wasn't departing to France for any normal reason anybody else had from tourism to returning home from a holiday. He had been tipped off by Dick Grayson, his former sidekick and Bludhaven's equivalent of Batman, that The Riddler was fleeing to the country and he was determined to catch him and bring him back to Arkham Asylum before all hell broke loose.

He didn't plan on going alone though. Not QUITE alone. For a formal, elderly voice spoken in his ear via an earpiece Bruce kept on him at all times.

"Master Wayne, are you sure about this? Surely contacting the French authorities of the Riddler's incoming to Paris will surely see him getting caught. That or Mr Kent could ask the plane to land at the nearest airport." it was the voice of his all too faithful butler, Alfred Pennyworth, who had fathered and cared for Bruce even since that horrible incident down Crime Alley that night.

Bruce suppressed a sigh as he put in the last of his luggage into the compartment above him.

"Now Alfred. As much as I trust Clark, he's never encountered the Riddler before, and he could be too much for him. That, and if Nygma can slip past the authorities here, he can slip past the authorities there. This will be the only way to get hold of him and brought back to Arkham without causing a political issue." He explained away to his elderly ally, who twirled his moustache on the other end of the earpiece.

"Well, whatever you say, Master Wayne. Though help is always there on my end. And I'll see if I can hold back any women wanting to get a good look inside the manor."

The butler honestly couldn't help but throw in a jab time and again to remind Bruce the troubles he'd have to put up with while his master was gone. This earned a chuckle out of Bruce, something that rarely occurred.

"They'll know soon enough I'm out of the country, Alfred, but hey won't hustle you. Just keep an eye on Tim, Stephanie, and Barbara for me if you can." He replied, always quick to think on his feet and ease his oldest friend.

"Oh yes, it shall all be easy, trying to balance babysitting you through an earpiece and monitor the actions of the youngsters while you're away. If only we could swap places."

Bruce rolled his eyes but inwardly smirked. He had to admit, Alfred had an attitude on him, but it was clear half of that attitude was a facade, much like Bruce's attitude in the public eyes. Bruce took the piece out of his ear and spike into the receiver.

"Go rest yourself for a bit, Alfred. I'll keep an eye on Paris through the news as I fly there." he requested, given that Alfred worked his back off these last few days, and age did have its misfortunes for the old butler, who seemed surprised "Really? My goodness, I am surprised at this sudden fortune. I'll go then, but I won't be gone for long. Must multi-babysit, as usual."

Bruce smirked inward again "Goodbye, Alfred. I'll hear from you soon." With that bidding message, Bruce slid the earpiece into his jacket pocket as the pilot entered the lounge section of the jet.

"We'll be taking off soon, Mr Wayne. Anything else you'll need before we go?" He politely asked, to which Bruce gave a firm wave of the hand.

"I've got everything I need, so I'm good to go."

With that firm confirmation, Bruce gave the pilot a nod after he gave his thanks. Bruce took a seat on his leather chair and watched as the pilot headed to the cockpit, where the co-pilot was waiting for him. Sinking back into the comfiness of his chair, Bruce gazed out of the window with a solemn look on his face as the jet began to turn. He always often wondered how things could've been if his parents hadn't died that night. Would Gotham still be the hellhole that it became? Would people like Superman and Flash come into existence? Would he have become an actual playboy who didn't care about the bothers of the rest of the world? Would he have even cared about the citizens of Gotham? It was always a hard thing to wonder, on what could've been, as such thoughts could tear at your heart and invade your soul for good. But Bruce knew better. Now it was best to live in the present and not focus on the past. He needed to keep up his crusade and make a difference, in Gotham or out of it.

The plane finished turning and headed off down to the runway. The engines whined loudly as the plane was taxiing into position. Bruce gave one last glance out of his window as he was about to leave Gotham behind. He didn't need to worry about it. Dick, Tim, Stephanie and Barbara would keep things under control while he was gone. They were the ones he trusted the most to keep Gotham in check, as well as the Police Commissioner Gordon. Gotham would be safe in his absence.

He held on tight as the plane positioned itself and began to rocket down the runway. In seconds it was up in the air...and right on The Riddler's tail...

Well this oughta get hairy. One of Batman's biggest foes is heading to France and now Bruce Wayne's after him! And Marinette and Adrien have no idea about this...

How will things turn out when The Riddler arrives? And how long will France stay peaceful? Tune in next time...