(Under My Skin: Frank Sinatra)

The cold autumn air swirled through the air in Gotham City as the residents went about their normal day to day activities completely unaware of what was happening in the GCPD at this very moment. In the lower depths of the basement of the police department it was dark and cold save for the hissing and rumbling of a large metal incinerator. The machine sprang to life and the gears began to turn and open the large metal door. A body was placed on the slab of the machine and within a moment a lever was pulled which caused the slab to be pulled inside the machine. As the fires of the incinerator began to form, the men and women of Gotham would no longer have to live in fear of perhaps the most evil and menacing man that Gotham had ever known.

The Joker

The lifeless body of the clown prince of crime lay motionless on the hard metal slab inside the machine. His face was covered in all sorts of patches of boils, redness, and all in all decaying skin. Even in death the mad clown still had a twisted and disturbed smile on his face. The fires of the machine then started to rise higher and higher as they consumed his body eventually reducing it to ash

"This is how it happened...this is how the Batman and Batmare died"

A lovely autumn day had just ended in the capital city of Canterlot. Celestia's sun had just finished setting and was replaced by Luna's moon. All was peaceful until the sounds of an alarm could be heard from the first national bank of Canterlot. Inside the bank, many of the workers and customers lay on the ground with their hooves over their heads as a large pony dressed all in black and wearing a mask stood over them. While this was going on a few other ponies robbers were inside of the giant vault filling bags with millions of bits.

"Hurry up and move faster before the guards get here" one shouted.

"Forget the guards, what about the bat?" another one said nervously.

"Just hurry up and we'll be out of here before the bat or any guards get here"

Hearing this the robbers quickened their pace and shoveled the bits into their bags. None of them wanted to deal with the mysterious pony of the night who was responsible for the downfall of crime in all of Equestria. It all started nine months ago when a group of small time robbers tried robbing the Carousel Boutique in Ponyville and as they were making their escape something happened. A pony dressed all in black, wearing a utility belt, and dornign a cowl with pointed ears arrived and pounded the criminals into next week before disappearing into the night and leaving them to the guards. Since that night, any pony in Equestria that broke the law was left mysteriously broken, battered, and beaten before being taken away by the guards.

The robbers finished filling their sacks with bits and quickly exited the bank. Looking down the street they noticed a few guards galloping quickly in their direction. Seeing this, the 2 unicorn robbers quickly fired blasts of magic at the guards causing them to take shelter behind a few carriages. They continued to fire magic blasts while the other two robbers made their way down a dark alley. Seeing that their comrades had made it to the alley the two unicorns stopped firing and followed. When they got about halfway down the alley, they gasped when they saw their partners lying motionless on the ground. One had bruises all over his face while the other one looks like he had his hind leg broken. The two unicorn robbers slowly backed away in fear before hearing something in a dark portion of the alley.

"You stay here, I'm gonna check it out" one of them said trying to act brave, even though he was scared completely out of his mind but nevertheless he slowly crept towards the dark area. His horn started to glow faintly as he got closer and closer to the dark area. When he got close enough, his horn glowed lighter to where it could light up the area. Expecting something to pop out he was actually surprised to find nothing there. Suddenly a muffled scream caught his attention and he quickly turned to find that his other partner was gone. Now officially scared, the sole robber ran down the alley at full speed trying to get away from whatever was going on. Just then, a hoof in a black glove shot out of nowhere and grabbed the robber, pulling him toward a dark figure. The robber quaked in fear as he was held tightly.

"What are you?"

The figure emerged slightly from the darkness to reveal a cyan blue body covered by a bat like cowl and wearing black with a billowing cape.

"I'm Batmare" the figure said in a deep voice.

The guards from before had just made it to the alley and made their way down, only to stop and find four beaten robbers tied together and two large bags of bits sitting beside them. One of the bags had a single piece of paper sitting on top of it and one guard picked it up. There were no words written on the paper, the only thing on it was a drawn symbol of a bat. The guards looked to the sky and smiled slightly knowing full well who to thank for the help.

Unbeknownst to them, the masked hero was flying through the air at super sonic speed heading towards Ponyville. The figure flew overhead before reaching a mountain that overlooked the small village and the cave that was carved into the side of the mountain. After landing on the ledge of the cave, the figure walked down the long hallowed out passage until reaching what looked like an elevator. The figure hopped in the elevator and pushed the one button on the floor dial. After that the elevator plummeted straight down at an incredible speed before eventually coming to a slow stop at the bottom. The figure stepped out of the elevator into a giant cave that looked as thought it had been set up as a secret base. There was a large computer with a screen displaying a bat symbol with a pony head on top and a bunch of tables that were littered with all assortments of gadgets and other items. One of the tables had a lot of newspaper clippings on it, most of them headlines entitled Mysterious Figure Stops Bank Robbery or Who Is The Caped Crusader.

"DASHIE" a voice shouted.

The figure jumped before turning to see a bright pink pony with with a poofy mane and three balloon marks on its flank. The figure then let out a long breathe noticing who it was.

"Pinkie you really need to stop doing that" the figure said reaching for its cowl. Pulling the cowl off the figure was revealed to be none other than the best flyer in all of Equestria, Rainbow Dash. The rainbow mane of the cyan blue pony flowed out and free from the cowl as she made her way towards the center of what she called the Batmare Cave.

"Okie dokie lokie" Pinkie Pie said with a smile. Rainbow Dash only smiled and shook her head knowing very well that the excited party pony would never actually stop. Then another pony, this one lavender in color with a purple mane with pink highlights and wearing glasses spun around in a chair that was seated next to the large computer.

"Good job out there tonight Dash" Twilight Sparkle said pointing a hoof at her friend. From another table Applejack, the orange pony farmer looked over and smiled.

"Yep I reckon em there thugs'll think twice fore deciding ta rob the good folks of Canterlot" she said with her thick country accent.

"Thanks Twilight, honestly with my amazing awesomeness and your help on the computer its just too easy to fight crime" Rainbow boasted as she threw hooves in the air as though she was pretending to fight someone. Twilight giggled slightly at that as a white unicorn with a purple mane and diamond cutie mark entered the area.

"Honestly though darling I wish you would allow me to design you a new suit, that one is so basic a drawl" she said waving at the suit Rainbow Dash was wearing with a look of disgust.

"I've told you a thousand times Rarity, this suit is not just fashion it's a symbol of protection for every pony in Equestria" Rarity just shook her head after being told this for the thousandth time. Every time she tried to get Rainbow Dash to let her design a new suit for her it was like talking to her sister Sweetie Belle. Sure she'll hear you but it doesn't matter because in the end nothing happens. Rainbow Dash looked around the Batmare Cave and noticed the lack of presence of another of her friends.

"Hey guys, where is Fluttershy?" she asked, to which Twilight motioned to another area of the cave.

"Oh she and Victor are working on research for a new gadget you can use"

The five ponies all made their way over to another area of the cave where there were two other ponies working at a table. One was Fluttershy, the shy yellow pegasus with the pink mane and butterfly cutie mark. The other was the newly transformed blue pony Victor Fries who had been living in Equestria ever since the group returned from Arkham City. The two were bent over the table with Victor welding something together while Fluttershy was looking over the blureprints. After a moment, Victor stopped welding a stood back.

"There, now if my calculations are correct this device should be able to allow Rainbow Dash' suit to camoflauge into any backround which would make her invisible to any eye" he stated. A little yellow hoof tapped Victor on the shoulder and he turned and looked at his friend.

"You did well Victor now please stop working for a while and go home to Nora" Fluttershy said softly but sweetly. Ever since the two of them started working on this device it was all Victor could think about most days. He spent most of his time in the Batmare Cave going over the blue prints and making sure his calculations for the camoflauge were correct and creating the device. Often times Fluttershy would have to use her fake serious voice to get him to leave the cave and relax which would always cause them botht to laugh before he eventually agreed. The blue scientist pony nodded and pulled the yellow pegasus into a friendly hug which she greatly returned before he made his way through the other cave entrance that led back to Ponyville.

"So what did Mr. Freeze cook up this time" Rainbow Dash asked causing Fluttershy to squeak slightly seeing as how she had no idea she or the others were behind her. Seeing them she breathed again before leading them to the table and showing them what looked like a giant pair of bat wings.

"Well these are a new set of wings that me and Victor created so that it could make you invisible in combat. The framework is designed to be flexible yet durable so it can weather any conditions and fold in to fit your body type. The material from what Victor told me is a strong type of kevlar material which he engineered with a special camoflauging formula that makes it impervious to most damage and is able to hide you in combat simply by folding them over yourself" she explained.

Rainbow Dash looked at the new wings were her mouth practically hitting the floor. This had to be one of the best tools she could receive, something that could protect her from harm and would also be able to keep her invisible in combat. Pinkie ran up to the table and grabbed the new wings and squealed in delight.

"Oh my goodness these are a-ma-zing and they are almost light as a feather. Lets see if they work" she said and put the wings on her back. She stood still and closed her eyes before eventually opening them but she didn't realize that nothing happened.

"Am I invisible?" she smiled. She ran up behind Rainbow Dash and raised her arms and flailed them around with wide eyes. "Ooooooh spooky" she said trying to sound scary. "Where did Pinkie go, its an invisble pony oooooooh" Fluttershy cleared her throat which got Pinkies attention.

"Sorry Pinkie but the wings were designed to only work for Rainbow Dash so everyone can still see you" she said sadly. Pinkie looked down at herself to see that she was indeed still visible. The pink pony smiled and turned a shade of red in embarrassment before taking the wings off and handing them to Rainbow Dash.

"Oops my bad"

Everyone laughed at the funny event before Rainbow put the wings on her back and folded them over herself. The wings sparked to life and Rainbow Dash's entire body turned invisible. Everyone looked with wide eyes and mouths hanging.

"Oh sweet Celestia that sure is one cool gizmo" Applejack spoke first and the rest just nodded their heads before Rainbow Dash folded the wings back and revealed herself once more.

"Man these are so cool and I'll bet even Batman doesn't have these yet" she said with excitement. Hearing the name everyone remembered back to nine months back when they ended up in Arkham City. They remembered everything from their first encounter with Hugo Strange, to fighting off murderous thugs in the streets, to helping save each other from villains and giant monsters, meeting Batman, stopping Strange, Ra's Al Ghul, and King Sombra from executing their terrible plot, all the way up to the death of the Joker. Arkham City was an event that changed their lives in many different ways, many for the better and some not so much but they were just glad that it was over.

The night air was cold and rainy in Gotham City. On Grand Avenue of one of the three islands that made up Gotham, Miagani Island people walked the streets holding umbrellas and cars drove by in the bustling metropolis. Over the past few months crime had fallen to an all time low which made many people feel relieved, though it also made people a bit nervous about what was to come next. A lone police officer made his way down the sidewalk to a little diner on the corner that he liked to frequent often. Smiling to himself he made his way through the front door into the diner where there were customers all sitting and socializing amongst themselves. The diner was decorated in Halloween decorations and a few of the customers were even wearing masks. The cop chuckled and sat at the counter as a waitress in an orange dress and apron came by with a pitcher of coffe and poured some for the officer.

"Thanks" he said.

"No problem" the waitress replied. A man walking by left a tip for her and she turned and smiled. "Thanks honey" Afterwords she took out a small notepad and a pen. "So what'll it be today? Same as usual?" she asked.

"Sure" replied the cop.

"Okay chicken salad with no dressing" She wrote down the order and was about to leave.

"No, you know what? Make it waffles with a side of bacon...Don't tell my wife"

"Whatever you say officer" she said and wrote down the new order. She then turned and headed back to the kitchen before looking back the officer. "Oh, if you need any more coffee just yell" The officer nodded to her and took a sip of the coffee she had just poured for him. All seemed peaceful in the diner until one customer came up to the officer with a look of nervousness and discomfort on his face.

"Hey sorry to interrupt your dinner, Officer" he paused and looked at the officers badge, "Owens, but there's a guy smoking over there in the corner booth"

He pointed towards a lone hooded individual sitting alone at a booth in the far corner of the diner. The officer sighed and picked up his hat from the counter, "Wait here, I'll have a word"

Officer Owens made his way around the tables of the diner towards the back. When he reached the table the smoker was turned away completely hidden by his hood and the smoke seemed to be emitting from a bag on the table. Breathing the smoke in the officer found the stench rancid and waved it away from his face before tapping the man on the shoulder.

"Excuse me sir there's no smoking in here"

In a split instance the man turned and grabbed the officer allowing him to get a full view of the man's or in this case monsters face. The face was completely demonic with jagged teeth and two black holes where the eyes should be. The demon threw the officer to the side where he fell first on the table and slid off to the floor. When the officer tried to get back to his feet, the interior of the diner seemed to fall apart and when he turned around the world looked like it had been completely torn apart and set ablaze. What scared the officer immensely was the fact that a number of demons now littered the diner, many of them attacking each other. One of them that was bashing the others head on the ground looked up at the officer and slowly began to approach him. The officer grabbed his gun holstered at his side and aimed to fire but the creature had ran up to him and held his arm away and looked like it was trying to bite him. Pulling his arm free, the officer shot the creature and started firing at many of the others before one of them pulled him to the start and started punching him before bringing its head down just as everything went black.

The incident was quickly relayed to the news and before long it was broadcast over every screen in the city. The scene showed innocent customers of the diner running in panic and an officer opening fire killing many of them before being eventually subdued. This frightened many of the residents of Gotham as they watched people in the diner fall to the floor with their blood staining the ground as ear piercing screams were heard. All of the sudden a high pitched shrine was head and many people looked towards a giant monster screen in center of a giant building in Grand Avenue as a deep menacing voice could be heard.

"This demonstration used just five ounces of my latest toxin," it said. The screen then showed the image of a hooded individual sitting in a dark room. Many people noticed immediately who the individual was as he was the one responsible for cloaking the entire city and everyone in it in fear for many years. This man was Jonathan Crane, aka The Scarecrow, who used to be a psychiatric doctor as well as a former resident at Gotham's penitentiary for the criminally insane, Arkham Asylum. During the Jokers attempt at takeover of the asylum, Crane was experimenting with a powerful chemical agent that he called fear gas which would cause the patients to be subjected to mass hallucinations of horrible things happening to them. He was chased into the sewers by Batman before being snatched by Killer Croc and dragged into the sewer where it is thought that he was eaten alive by the giant reptile man. Yet clearly here he was very much alive and even more dangerous than ever.

Tomorrow this will seem like child's play. Gotham this...your only warning" he said lifting his head to reveal his face. He looked even scarier than he had been known to over the past years with only his mouth and teeth being exposed and the rest covered in a gas mask that was grafted to his throat. There were an assortment of tubes running all over his body that carried a strange golden liquid all over his cloaked body. Then of course there was his hand that was covered in a glove where instead of fingers there were four sharp syringes. The image of Scarecrow began to fade as dark static began to overtake the screen before it went completely dark. Withing just twenty four hours, the entire city was being evacuated of a large majority of the citizens of Gotham. Before this threat there were 6.3 million before in Gotham, and now not so many. The only ones that remained behind are the ones that like the chaos as many thugs roamed the streets of Gotham freely flipping over cars, robbing and looting as they pleased, and causing complete chaos for the city. The brave men and women of the Gotham City Police Department also stayed behind to help keep the city safe, but they were quickly loosing control.

In this moment, Gotham was relying on one man to save them all

Author's Note

A/N: I want everyone to know that this story was not my original idea. The idea of this came to me from reading My Little Arkham published by ADHD365 and also The JGBrony 1875 who originally was working on this story so all of the credit goes to them. Also in case you haven't realized this is a sequel to their story so before you read this you may want to consider reading their story so that you won't be completely lost when you read this. Also I want everyone to know that this story will cut out some of the main quest of the Batman Arkham Knight storyline as I plan to use some of the side quests for some of it so you won't be able to see everything from the game.