Prologue: Humanity's Secret Weapon…the Deadmen!

The smallest trace of a grimace formed across Levi's otherwise stoic face as he and Commander Erwin stood outside a large set of oak doors. A twinge of pain shot up from his sprained ankle, but the Survey Corps captain shook it off with a thought as his deadpan eyes continued to try and bore a hole through the door.

"And people say I'm rude," he said with a hint of disgust.

"Patience, Levi," the ever-calm Erwin simply stated. "They are attempting to demonstrate their power by keeping us waiting. It's an elementary negotiation tactic."

"Even so, I'm not sure why they summoned me as well," Levi said. "I understand these pompous asses' wanting to shriek at you for the hundredth time about the Leonhart incident. I, on the other-hand, have better things to do with my time than listen to a group of morons rambling on and on about matters they can't comprehend."

"I hope I'm not one of those 'morons' you're referring to, Levi," Erwin said with a small smile. The black-haired man gave his superior a small glance before returning his gaze back to the doors.

"All I'm saying is they better be quick about it, whatever it is."

The duo stood in silence for a few more minutes as the ruler of the Stohess District continued to keep them waiting. Finally, the wooden doors creaked open and a petite woman who wore the insignia of the Military Police came out before shutting the doors behind her. Levi noted the pile of reports clutched in her arms as the she rushed past the two Survey Corps members and down the corridor. He wondered briefly what kind of reports she could possibly have that had taken so long to retrieve. It wasn't difficult to take a few leafs of paper after all. With a mental shrug, Levi completely dismissed the girl from his mind as he and Erwin were ushered inside.

It was an extremely dim-lit room, with the curtains of the window having been drawn shut leaving the only source of light to be a few candles spread throughout the room. Another unusual thing was that the large wooden table was almost completely vacant. There was in fact only one person seated at the table, the Ruling Noble of the Stohess District: Johan Klaus. This was in stark contrast to how the large, meeting room was usually presented. Normally, the mahogany table was overflowing with officials, magistrates, priests, and nobles all trying to show off how important they were. Today however, only Klaus and his top assistants were present.

"I like the new décor," Levi said, letting his voice carry across the room, "very cloak and dagger. It's nice to get some breathing room in here for a change too. It's usually like a pig sty in here."

"Yes, go ahead and get all of your little comments out," said the annoyed noble with a dismissive wave of his hand. "Erwin, we have a matter of grave importance to discuss. I would appreciate it if your subordinates would control himself."

Casting a glance over to his right-hand man, the tall, blonde man arched his eyebrows in a form of non-verbal question. Levi returned his commander's stone cold gaze with one of his own before giving him a small shrug of his shoulders. Without even a look to the noble at the head of the table, the captain walked to one of the chairs and swiftly sat down. While his comrade crossed his legs and draped his arms across the back of his chair, Erwin sat down at the end of the table, directly across from the nobleman.

"You requested that we come to see you here, Lord Klaus," the blonde commander said. "Just now you claimed it was an urgent matter. What is it? News regarding the Titans discovered inside of Wall Sina?"

The ruler of Stohess visibly blanched at the mention of the disturbing discovery. Thankfully, it seemed as if only military personal had witnessed the Titan inside of the crevice created by the Female Titan and the hole had been covered up swiftly. However, the incident had still caused quite a stir in higher up circles. In fact, this new revelation along with the discovery of a Titan Shifter amongst their own had led to this decision to take such…drastic measures.

"No…nothing about that," the balding man responded. "No, this is about some potential new allies for you in the Survey Corps, Commander Erwin."

"New allies?" asked Erwin in his steady and calm voice without a hint of curiosity or surprise to be found in it.

"Nothing ever fazes you does it, Commander," Klaus said with a small sigh. "Yes, it seems that the higher-ups have decided that with all these new threats and developments, the Survey Corps could use some new blood in it. First though, tell me Commander Erwin, have you ever heard of a place called, Deadman Wonderland?"

Erwin's eyes immediately darted over to Levi when he heard the name. Humanity's Strongest Warrior hadn't paying any attention up until that point, with his head turned away from the nobleman and his emotionless gaze resting on the royal flag that was hung above the entry-way. Now though, a flicker of recognition could be seen in the dark-haired man's eyes and Levi's gaze slowly shifted over to the nobleman.

"Yes," Erwin replied. "It's a prison located inside the capital, where all of the worst criminals within the walls are held. Above it is the more well-known Coliseum, where prisoners are pitted against each other in battle for the entertainment of the nobles and citizens of the capital. I believe that the revenue earned from gambling and admission there is the highest source of revenue for the government in fact."

"Um, yes…quite right," said Klaus, beads of sweat beginning to drip down his forehead thanks to the unnerving glare that Levi was giving him.

"Are you suggesting that our new recruits will be the prisoners from Deadman Wonderland?" asked Erwin.

"No, no, don't be preposterous!" the noble quickly exclaimed. "The men imprisoned there are scum without any valuable skills or assets. They're simply breathing trash! They could never learn to operate the 3D Maneuver Gear and would be of no use against the Titans."

"Plus, we wouldn't want you nobleman to lose your favorite form of entertainment, now would we," stated Levi.

Lord Klaus turned his gaze back to the dark-haired captain. Even though his words had been said with such calm, the nobleman still felt a burning sensation on the back of his neck as he heard them. As he looked into the man's deadpan eyes, they revealed no emotion from the Survey Corps member, and yet Klaus swore that a raging fire seemed to be in them. Yet when he looked again, Levi's face was the same emotionless mask he always wore.

"Then, if prisoners are not being conscripted into the Survey Corps," Commander Erwin said, breaking the tension and silence in the room, "why do you bring up Deadman Wonderland, Lord Klaus?"

"Well, even though the normal prisoners of Deadman Wonderland well be of no use, there are a few…special cases that could prove to be extremely valuable in the war against the Titans," answered Klaus quickly, happy for the excuse to ignore Levi's scathing words.

Erwin cocked an eyebrow at the nobleman, signaling his unasked question. He had never heard any rumors about the prison that resembled anything like what Klaus was vaguely referencing to now. There had only ever been one interesting case that he had ever learned about that prison, but besides that it was simply a disgusting symbol of humanity at its worst. What could the government possibly be hiding there?

The noble opened his mouth to continue, but to his surprise, he was cut off before he could even utter a syllable.

"You mean the Deadmen, right," stated Levi matter-of-factly.

Klaus' eyes widen with shock and his mouth opened slightly in horror as he heard the other man's words. The question he was asking himself was advent to everyone present in the room, the stunned expression on his face was a dead give-away. How the hell does he know that!?

Levi's dispassionate exterior never changed as he read the man's face. Surmising from the man's surprise that he was correct, the captain turned to face his commanding officer. A small scowl twitched around his lips as he addressed Erwin.

"Seems that since we're in charge of babysitting one freak, they're going to dump all of them on us, Erwin."

"What do you mean, Levi?" the blonde man asked. "What exactly are these 'Deadmen'?"

"They're humans who have the ability to use their own blood as a weapon," answered Levi. "Deadmen are the primary combatants of the Coliseum's biggest 'event': Carnival Corpse. Where only the best fighters-mostly Deadmen-compete in death battles for the entertainment of the swine who call themselves 'noble'."

A small look of astonishment spread across Erwin's face as he listened to his subordinates account. It was almost unbelievable to imagine that there were such individuals, but the Survey Corps Commander had met several people capable of transforming themselves into Titans. He wasn't ever going to label anything as impossible after that.

"Are these the special cases you were referring to, Lord Klaus?" asked Erwin, turning to face the aristocrat.

The nobleman nodded his head. "Because of their abilities, they are kept out of the public eye. Only the noble families and select high-ranking government officials even know of their existence. I wasn't aware that you knew though, Captain Levi."

Levi simply cast a glare at Stohess' ruler before turning his attention back to Erwin. The blonde leader of the Survey Corps has his elbows propped on the table top and his hands clasped together in front of his face. It was a stance Levi had seen his general take many times before, whenever he was attempting to devise a plan.

"Levi," Erwin finally said. "Could these Deadmen really be an asset in the fight against Titans?"

"Sure," he replied. "All of them have a screw or two lose upstairs, but it's nothing we haven't handled before. They share many of the same problems as Eren: undisciplined, stupid, hot-headed. Also like Eren though, their abilities outweigh the headache of having to keep them in check."

Erwin nodded as he unclasped his hands and leaned back slightly in his chair. A small smile graced his lips, the only sign of his immense pleasure at this newest revelation. This could be exactly what humanity needed to help beat back the Titan threat.

"Excellent, now what exactly can you tell me about their abilities specifically? Like how…"

"That's quite enough, Commander Smith."

Both men turned their blank faces towards the noble at the head of the table. Klaus wore an annoyed and angry expression on his face as he addressed the two men.

"You two seem to be under the wrong impression. This is not a reward or a token of the monarchy's gratitude for your exemplary service. Oh no, no this is in fact a punishment. You see, this incident here in Stohess has shown us that the Survey Corps has forgotten its place and over-stepped its boundaries."

Erwin opened his mouth to respond to the nobles' assertions, but Klaus raised his hand to halt him before continuing.

"So while the Deadmen well be working side-by-side with the Survey Corps, they will not actually be under your command, Erwin. In fact, they will be under the command of a special detachment of the Military Police to ensure that you behave yourself."

Silence fell over the room as the two officers let the reprimand wash over them. So it seemed that the government wasn't attempting to help their cause after all, but instead was trying to hinder it. Erwin quickly accepted this fact, but also realized he could still use this to help his own cause. Even if they were there to keep an eye on him and his men, there would still be a contingent of highly trained Military Police and humans with super powers forced out to the front lines to help combat the Titans.

"If I may ask, Lord Klaus," said the Commander, not allowing the news to faze him in the slightest, "who exactly will be commanding this force then?"

"That would be me," answered a forceful, yet feminine voice.

The two leaders of the Survey Corps turned towards the entrance of the room. Standing inside of the now opened doorway was a tall, very attractive woman. Her long, dark-brown hair was kept in her green beret, except for one lock of hair that framed the right side of her face She was adorned in the typical uniform of the Military Police, except that besides the typical MP insignia of a green unicorn on the left breast of her brown jacket, there was also another emblem on the right side: a blood red shield with the capital letters "DW" inside.

"Makina," Erwin said a hint of surprise in his voice. Levi shot a quick glance over at his superior. It was unlike the man to ever be rattled by anything, much less by a single woman.

"Erwin, good to see you again," said Makina with a small smile. "I haven't seen you in ages. Glad to see you're still in one piece, I know that's a problem for you boys in the Survey Corps."

"Better than cowering behind the walls, stuffing yourselves fat, and then wetting yourself whenever you're forced to perform your duty," snapped back Levi. Even though his face was emotionless as ever, his words betrayed his anger at the Military Police's hypocrisy.

"Ah yes, Levi Ackerman," said the woman as she turned her gaze towards the shorter man. The smile she had worn earlier had fallen away and all that remained was the face of a harsh, stone-cold enforcer. "Keeping yourself out of trouble I hope."

The dark-haired warrior opened his mouth to quip back, but he stopped himself when he saw Erwin raise his hand. Standing up, the tall, blonde commander moved to stand beside Makina before extending his hand out to her.

"It is good to see you again as well, Captain Makina," he said. "I look forward to working with you."

The lady of war eyed the commander for a few moments before shaking his hand. Another smile graced her lips as she said.

"Likewise. It will be just like old times."

"It's good to see that you two are playing nice," said Klaus as he watched the two officers break off their handshake. "Hopefully, this union will benefit everyone and the Survey Corps can stick to what they do best. Now, Erwin, you and your men will remain here until your formal disciplinary hearing for the Leonhart incident in two days. Will that be enough time for you to ready your team, Captain Makina?"

"Yes milord," she answered. "We'll have all the Deadmen and my squad ready to move out by then. Though, I have already sent ahead several of my men to the location where several of the Survey Corps members are staying."

"Why's that?" questioned Levi. "Couldn't wait to start spying on us?"

Makina simply shot a fake smile at the dark-haired man. "Just want them to be able to get a head start on becoming friendly with everyone is all."

"That location is where we are keeping members that we believe may be accomplices of Annie Leonhart, Captain Makina," Erwin swiftly stated. "I hope that by sending your men there, you don't tip them off to our suspicions."

"Not at all," she said with a dismissive wave of her hand. "I actually sent them there because of that very reason. If enemies of the state are in fact there, it would be best to have some added security to make sure they don't escape. Don't fret about it, Erwin. I sent a team of my best men along with the three Deadmen that actually know how to use the 3D Maneuver Gear. They'll be of assistance, I guarantee it."

"Sounds like a reasonable plan to me," said Lord Klaus, putting an end to the discussion. "Commander Erwin, debrief your men and tell them that you are going to be working with a Special Task Force and nothing else. Obviously, you'll swear them to secrecy. This can't get out to public after all. Makina, I would like you to stay here and discuss some of the logistics with me. You two are dismissed, and Erwin, I'll see you back here for your disciplinary hearing in two days."

Erwin stood and saluted the nobleman while Levi simply rolled his eyes and walked out the door. His superior was quick to follow him out and the pair of Survey Corps made their way down the corridor to go debrief their men. They were both silent as they walked. There was no reason for them to exchange words, they both knew the gravity of the news they had just received.

The game had completely changed once again.

At The Exact Same Time:

Mike stood on the roof of the Survey Corps compound near Wall Rose, staring with widened eyes at the scene before him. His expression was a mixture of awe, horror, shock, and bewilderment. He simply couldn't believe what his eyes were telling him. It was impossible. No single man could cause slay a Titan with that little effort and with such destructive force. Not even Captain Levi was capable of such a feat!

Just a second ago, a Titan had been bearing down on him, lunging with its wide, disgusting mouth in attempt to swallow him whole. The experienced Survey Corps member had been able to narrowly escape death, but when he turned around to deliver the killing blow to his attacker, he had discovered there was no need. The monstrous giant had fallen to the ground, dead…cleaved in half by what appeared to be a single, master stroke.

Looking up from the Titan's carcass, Mike was surprised to see that a tall man with spiked, black hair now stood before him. The man's back was turned to him, but the emblem of the Garrison -two red roses inside of a silver kite shield-imprinted on the back of his long, black trench coat marked him as an ally. However, there was something off about this guy. What was a member of the Garrison doing all the way out here? And wait…WHAT THE HELL ARE THOSE THINGS ON HIS ARMS!

"Heh, heh, dead center," laughed the man before turning his head to look at the terrified Survey Corps member. A wicked grin was plastered across the man's face, almost reaching all the way to the black eye-patch that covered his right eye, which also had a small tattoo etched above the eyebrow. However, none of these disturbing features were the ones that Mike's eyes were glued to. No, that distinct honor belonging to the vicious-looking, blood red, blades that were protruding out of the man's forearms!

"I love this new gig," Senji Kiyomasa said with a cocky smirk. "I might finally be able to get a half-way decent work-out now!"

Thanks for reading the first chapter of Attack on Deadman! As you can see, this is a crossover where the characters and some of the plot elements from Deadman Wonderland have been incorporated into the Attack on Titan universe. I absolutely love both of these series and I actually read them both at the same time and they both just seemed to click with each other and I thought to myself, "Hey, I can make a pretty cool story by combining these two!" Then I was shocked to find out that no one had ever made a crossover between these two series and I figured I might as well be the first. Special thanks have to go out to Roseblade22, who was patient enough to listen to my fledgling ideas for this story and helped push me to actually writing it.

I promise this will be the longest A/N I ever leave in the chapters, but I did think it was important that I sort of explain what sort of expectations you can have regarding what from each series you'll see in this story. Basically, I'll be using characters and plot points from Deadman Wonderland to explain many of the questions that haven't been answered yet in the Attack on Titan universe. Like: Where did the Titans come from? What's in the basement? What's the deal with Titan Shifters? Etc. So, the plot will be completely Attack on Titan and the story will take place completely in that universe. All of the Deadman Wonderland characters will be incorporated into the Attack on Titan universe and while their backgrounds and personalities will remain mostly the same, they'll be tweaked slightly to fit this setting better. I was really surprised while developing the story on how well the characters fit into the universe and how well the abilities and powers fit together and how easy it would be to explain certain things by using both stories. As far as knowledge of the series goes, you really will need more knowledge of Attack on Titan than you will Deadman Wonderland since we'll be following the plot of Attack on Titan. Of course, it would be best if you had completed Deadman Wonderland and were completely caught up with Attack on Titan's manga because there WILL be spoilers for both series in this story, though there will be many more Attack on Titan spoilers than Deadman Wonderland ones. If you've only seen all of the anime of Attack on Titan, you will still be able to follow along because that's where the story begins at, but you will be spoiled to the future storyline because that is what this story will cover.

I hope that you will be willing to experience this fun ride with me! Again thanks for reading, and I would leave to hear from you in the form of a review or a PM about your thoughts on the story, on Attack on Titan or Deadman Wonderland, how you believe the story will progress, how the characters from the different universes will interact with each other, and anything else you have to say I'm more than willing to listen! Until next time!