Disclaimer: Too bad I don't own anything…

Summary: The difference in the Justice League due to the inception of a Saiyan Harry Potter entering Batman's life before the formation of the league. Will contain AU of all episodes of the Justice League and JLU animation series. BMWW, SMLL, HP?

So this story will be a crossover of Justice League, Harry Potter and Dragonball Z. Of course, I have twisted some parts to my whims from Harry Potter and DBZ. Also, this story will contain parts from Batman/Superman comics series. Cheerios!

Oh, I almost forgot – When I come to it, I will write the Justice League Unlimited episodes with only the original Justice League and guest appearances by relevant characters. I didn't really like the idea of over 50 superheroes working together for any length of time. Where will they find enough crisis's?

Chapter 1: Meeting of Legends

I was hovering above Earth. My body was broken in many places with cuts bleeding like a river. My mind was getting foggy with pain and exhaustion. I was running out of time. There was one last thing I had to do.

For the last time, I looked at the blue planet below me with sadness. This was the last time I would ever see anything. Already, spots of red and black were appearing on the surface. I could do nothing to save the Earth from evil.

I took a ragged breath and started to concentrate. "KAA…" I focused and collected as much Ki as I could in my hands. My hands and mind strained to generate more Ki from my body. "ME…" The bright whitish blue ball in between my hands started to glow brighter. "HA…" I focused to generate more Ki and condense the ball of Ki. "ME…" I pulled the ball to the side of my body a bit to launch it.

I shouted "HAAA" as I pushed my hands outwards, shooting the ball of Ki towards Earth. I kept pushing more and more Ki as the ball zoomed through the atmosphere. As it neared the surface, I channeled every last bit of Ki I had. I watched sadly as the ball plowed through the Earth's surface setting off a massive quake and dust wave. I continued to push the ball of Ki as it penetrated deeper and deeper into the Earth's crust. I could make out the big cracks on the surface and the huge shockwave flow like a ripple on a pond.

Then, the Earth exploded into pieces and my world went black.

OoO

I entered the conscious world again hearing a faint scream. My body was aching unlike ever before. Considering the tiffs I had been involved in before, this time must have been some fight. Sensei Li would be very mad. My thoughts were scrambled but a nearer scream made me wince. It was too loud and it was too close for comfort.

I tried mightily to get my thoughts in order. It was difficult since pain fought to encroach my mind. Finally, I muddled through and opened my eyes.

I saw a cement floor. Cement floor. Cement. Floor. With snow on it!

As that registered, I got a massive jolt in my heart and my eyes widened comically. This was not possible. I had destroyed Earth, watched it explode into tiny pieces. Yet, here I was facing a cement floor which was snowed and hearing a decidedly human scream for help. Now that I was able to think somewhat clearly, I also heard the noises of a scuffle and the noises of automobiles and far off music.

Wasn't I dead? Was it supposed to hurt like a bitch? Was I in hell?

"HEELLLLLLP…" there was that scream again.

I got up painfully to my hands and knees and looked around. I shivered as I felt the cold, biting air on my broken and bleeding body. The cuts seemed to have stopped bleeding and I was mildly thankful for that. I was in an alley somewhere, an alley that was decidedly dirty. There were pieces of garbage all around me and a large garbage bin to my right. I supported myself using the wall behind me as I got to my feet. Then I saw a woman, a pretty one in late twenties or early thirties, being held by her arms by two people wearing ski masks. The third man was in front of the woman tearing her clothes off. He too was wearing a ski mask.

I did not tolerate abusing women. I jumped towards the man tearing the woman's clothes since he was only five feet away from me.

OoO

Batman POV

I was doing my nightly patrol of Gotham city. I had already stopped two robberies tonight. I was swinging towards the East end when I heard a woman scream for help. I disengaged the grapple and landed on a nearby rooftop. I shot another grapple line and shot off towards the screaming woman.

I peered at the scene below me and found what I was searching for. A woman was being assaulted by three thugs. Unfortunately, this was a common occurrence in Gotham and it was up to me to put a stop to it.

But I stopped as I noticed another figure rising to its feet using the wall as support. It could be a trap, so I observed the rising figure of a man more closely. He was covered in blood and his clothes were tattered with cuts. All I could spot clearly was blood soaked black hair before the figure launched himself at the thug who was undressing the woman.

Deciding to intervene if it was necessary, I watched. The thugs did not have any weapons out and so it was not that much of a risk to wait.

The man tackled the third thug right in the middle and both of them crashed to the ground. The bloody man got up and faced the two thugs while the third thug lay on the ground, dazed.

The two thugs released the woman and stepped towards the man. The man did not move. The woman picked up her purse and used it to covered her bare chest as she ran away without looking back.

Then, the man exploded into action. He kicked the first thug in the stomach while simultaneously punching the second one in the face. The man was obviously trained in the martial arts. I could see him brace his left leg as he fell, indicating that it was broken. I could make out the man was struggling with his breath as the two thugs got up again.

The first thug withdrew a gun and shouted "Fucking bastard! I will kill you!" He aimed his gun towards the bloody man and I prepared to throw a batarang to knock off the gun.

But to my mild surprise, the bloodied man kicked the wrist holding the gun and I could hear a bone crack and break. The gun fell to the floor. The thug cradled his wrist and collapsed to the ground. This man must be something if could kick that hard and that fast even when he was obviously injured badly.

The second thug was now rushing at him with a knife. He sidestepped, allowing the knife to pass through and then brought his elbow hard on the thug's head. The second thug collapsed unconscious.

I watched as he gingerly held his ribs and limped over to the first thug who was still cradling his broken wrist. He had not spotted the third thug, whom he had tackled before, get up.

The thug saw his comrades down and drew a knife. He was about to charge at the man when I jumped down from the room, right on top the thug. My cape helped guide me in the short fall.

The bloodied man whirled around quickly at the noise and came face to face with me.

OoO

I was limping towards the first thug to knock him out when I heard a crash behind me. I turned around and faced a… masked something. He had disabled the third thug who I had ignored. My broken ribs hurt at the action but I fought not to show the pain.

He was garbed in black. His face was half covered by a cowl with pointed ears. There were white blanks in the place of eyes. I could make out a highly defined jaw and a grim mouth. The man, yes man had a black or dark blue colored cloak or cape around him. Below that, I could see skin tight rubber like material, Kevlar maybe in grey color. I had seen police wear it on TV during my stay with my relatives. He wore black underwear out of his grey pants. If the situation was not so serious and I was not injured, I could have laughed seeing his black underwear. I could also make out a half covered black image on his chest. The man wore black boots to complete his gothic costume.

I suppose he could be imposing to some weak willed imbeciles like those I had dispatched now. But after seeing a psychotic, demonic looking murdering wizard after dark rituals, he was hardly anything to be frightened of.

I felt him trying to assess me and so I blanked my face and cleared it off all expressions. I had managed to learn Occlumency from a capable teacher sometime ago. I stilled those thoughts as they lead to more painful memories of the teacher.

I struck the only conscious thug on his head to knock him out all the while watching the spectacle in front of him closely.

OoO

Batman POV

I saw the bloodied man gather himself quickly, too quickly in my opinion. He was not a little bit scared. Usually, criminals were scared or at least very nervous when I make an entrance like that. I covered myself with my cape and watched him watch me. There was no recognition or fear in his eyes.

It was not a man! It was a boy, a teenager. He was in his late teens. He had black hair and piercing green eyes. I had never seen emerald green eyes like his. They were otherworldly. He was not overly muscled like Superman. He was much like me, lithe and athletic. He was a little thinner than me. He was of the same height as me. He wore torn a t-shirt, slacks and some kind of tattered black robe over them.

Suddenly, he became unreadable. It was… unnerving to watch his face become blank like mine is when I am Batman. I could not make out a thing, not even the pain which I am sure he was in. He did not speak.

"Who are you?" I asked harshly, hoping to intimidate him.

"Who are you?" he questioned back in an emotionless voice. Even then, I could make out his clear English accent, like Alfred's.

"Batman" I offered curtly.

"Never heard of you" he replied. I was inwardly surprised but did not show it. Everyone in Gotham knew of Batman, even if they did not believe me to be real. So he must be a stranger to the city. He was probably a British citizen. There were not many people from Britain who came to Gotham unless it was business. So who was he?

"Your name?" I demanded again.

He was quiet for a moment and his eyes seemed to narrow a bit before he answered "Harry Potter."

I mentally ran through the names of criminals or celebrities with the name Potter. I could recall no one. "What are you doing in my city?" I asked coldly. He needed medical attention but I could not afford a threat to my city. I had to continue questioning him. Leslie would kill me if she saw.

"I don't know" he answered promptly. I could not make out if he was lying but the answer was given too quickly and I could not detect anything from his body language, not even pain.

I decided to take another track to get answers "Why did you attack the thugs?"

"I detest rapists" he replied, to what I could detect, honestly.

"Where did you learn the martial arts?" I probed further.

I could see the man stiffen slightly almost against his will. "It is none of your concern" he replied shortly.

"Who trained you?" I persisted. Perhaps, I could get somewhere with this. I obviously hit a sore point.

The man kept quiet and refused to answer. I saw the glimmer of anger in his eyes.

I assessed him again as I let him stew in my presence. I knew this slight delay tactic worked well. It also gave me time to see how much more I could push. The man seemed to have reopened his wounds. Fresh blood was dripping down his body. His injuries were quite extensive. Perhaps he was tortured?

"Who tortured you?" I asked bluntly. This would be my last question. If he was tortured, it meant that he was either someone important or that he was targeted by some criminal. In both cases, I would need to investigate further.

The man simply glared at me and I had to admit, it was powerful, and dark, like mine. I was really getting unnerved. This man, who seemed to be just in his late teens had too many similarities to me.

So, I stopped questioning him. "Do you know the way to the nearest hospital?" I asked blankly. This was as far as I went in asking gently. This would also serve to check if he was really not from Gotham.

He shook his head and answered "No." This person was getting more and more mysterious.

"Wait here. I will send the police and they will take you to a hospital" I told him.

I had barely completely my sentence when he said immediately "No. I don't want to be accounted for downing these thugs. Give me the directions and I can make it on my own."

He did not want fame. Interesting. Or was it that he had to hide something from the police? Was he a high profile criminal? No, I discarded that thought. High profile criminals usually did not stop 'little' things like rape. So, he was used to fame and hated it. I could relate to him, being the heir of the Wayne fortune.

It wouldn't be a problem to get him to one of the hospitals run by the Wayne foundation. But, it would be better if I could observe him more closely. If I take him to Leslie's clinic, I can try to get some answers out of him as Bruce Wayne.

Decided, I tapped my cowl near my left ear to connect to the computer in the cave. The man watched me carefully, warily for sudden movements. He was very well trained. The similarities between him and me were rising.

"Computer, call Dr. Thompkins, Private line" I said clearly.

Moments later, I heard the ringing of telephone. "Who is it? Alfred, is that you?" Leslie asked drowsily. She knew that only Alfred called her this late, or this early in the morning, usually to patch me up.

"It's Batman. I have a patient for you on the Fourth, East Road" I answered curtly.

"Bring him to the clinic" she replied, now awake and understanding the situation.

"No. Bring your car" I ordered and cut off the call. I knew she would be here in minutes. I lowered my hand.

My patrol was almost done. It was time to go to the manor. I decided to wait for Leslie to arrive and then inform Gordon and then leave.

OoO

Harry POV

I was uncomfortable with the situation though I tried not to show it. I answered his questions truthfully because I didn't where I was. There was a dark undertone in his voice that reeked of rigidly controlled menace. By his voice, I could make out that he was American. Did that mean I was in America? I was reluctant to give my name but in the end I decided to tell him. Anyone on Earth would have attacked me soon after seeing me. So where was I? The man was astute and he asked questions tactfully. Some of them hit home hard.

I was relieved when he asked me if I knew my way to hospital. He seemed to have believed me. I refused to be take credit for bringing those thugs down. I had had enough of fame and its trappings.

Since I didn't have any money or didn't know my way around, I kept silent when he called someone called Dr. Thompkins and told him / her to bring a car. I was not sure I could walk far anyway.

I relaxed a tiny bit and eased my expression. I got a good vibe from him when I had spread out my Ki to read him. He was fairly strong, far stronger than normal humans and he was not magical.

I limped to the nearest wall and leaned against it, feeling that I could trust him. He made no move to help me but he watched me intently all the time. I let out a sigh and relaxing my blank expression, asked him "Where am I anyway?"

"Gotham city" he answered curtly.

"Gotham city?" I asked puzzled. I had never heard of such a city before. Granted, I didn't know I was even on Earth but considering that the thugs had been humans, I inferred that this was some Earth, not his.

"What country?" I asked hoping that he would say America.

"USA" he replied. I could detect interest in his voice but I was filled with happiness. I was on Earth! I tried not to show it.

"How…" I blurted before stopping myself. I had to think more on this. How was this possible? I had destroyed Earth and I had seen it blow up to pieces. Now I was in America, in a city called Gotham. I met this guy called Batman who dresses up in a costume. How many more surprises do I have to take?

I contemplated what to do in silence which Batman didn't break.

OoO

Batman POV

That was unexpected. He had not heard of Gotham city at all. I am sure that Metropolis and Gotham are known throughout the world, after all they are two of the biggest cities in the world and attract more attention to meta humans than any other region in the world. I guessed that he would be surprised by learning that he was in America but I hoped he was lying. He was not. He had relaxed the blank expression but it was still hard to read his emotions clearly. But his surprise was genuine.

I have to remember to take a DNA sample when he is with Leslie and try to learn more about his origins.

The silence was… comfortable. They were both trying to analyze the information they had gleaned from each other. Nothing was conclusive. By all signs, he was not a meta human but what teenager required the kind of martial arts training that I had witnessed? Other than me? Was he someone who was trained from birth as a weapon by the government? I had heard rumors about that. His behavior and surprise during their conversation would corroborate the theory.

Or was there something else? I just knew that there was something different about him. I always dealt in hard facts and logic but I have sometimes acted on my instincts. All my instincts, facts and reasoning pointed to the fact that this teenager was someone important.

I walked towards the entrance of the alley when I spotted Leslie's car. "The car is here" I told him brusquely. He followed me, limping slightly and holding his right hand over his ribs.

Leslie had gotten out of the car and opened the backseat door by the time we reached her. I saw that she had come prepared.

OoO

Harry POV

I saw an elderly woman with a kind expression near the car. She had quite a few white hairs but her eyes were smiling. I hoped she was not another Pomfrey. She was not squeamish, I will give her that. I knew I was a bloody mess but she didn't even blink. Maybe these kinds of injuries were common in this depilated area of Gotham City.

"Get in and rest on the backseat young man" she told me kindly.

I complied and I detected Batman move away. I had spread my Ki out around me before and I could easily make out the moment he disappeared. I wanted to ask him more questions. Oh well, I could always find him anytime. I had memorized the signature of his Ki and since his Ki was quite prominent, he would stand out to my senses in this city.

Dr. Thompkins got in the front seat and started to drive. Without turning back, she asked me "How did you get those injuries Mr…"

I stiffened but forced myself to relax. "It is Harry, Harry Potter Dr. Thompkins. I got them in a fight" I replied. I guess she had some connection to the Batman he had met earlier. If Batman was going to talk to her later about him, I thought it would be best to be as vague as possible.

"Don't worry Harry. We will get you fixed up in no time. Say, you aren't British, are you?" she asked curiously.

"Yes Dr I am from London" I told her thinking it was safe enough.

"I have a friend from England too Harry. He has been dying to meet to one of his countrymen for ages. When you are all better, maybe you can visit him" she asked me hopefully.

What was the harm in that, other than not knowing anything much about anything in the muggle world of course. "Okay Dr. Thompkins."

I stopped for a second and decided to tell her of my monetary situation "Dr. Thompkins, I am sorry but I don't think I can pay you anything for your services. If you drop me off to a government hospital, I am sure I can manage."

"Christ no child! I do not need money. My clinic is well funded and to tell you the truth, the hospitals in Gotham, especially the ones run by the government are sorely lacking in their efficiency. Sit tight Harry, we are almost there" she practically ordered me in the end.

"Thank you ma'am" I told her gratefully.

OoO