I don't own DC or DB

Goku felt like he was a pretty patient man, he waited 7 years to see his second son for the first time, he spent 10 months training for the first world martial arts tournament, and he went 80 years without fighting a real opponent before beginning to complain about it. He considered himself extreamly patient until this very moment where he pushed the massive thousand foot tall and wide iron weight up with his arms; he didn't know how much weight he was pushing anymore, a hundred trillion tons? Maybe a quadrillion tons? It was impossible for someone with an eighth grade intellect to possibly quantify the weight he was pushing, however; he knew how many times he'd pushed it up above his head and back down to his shoulders although he still needed to count aloud to keep track.

"47 Million 863 thousand 410, 47 Million 863 thousand 411," the counting seemed endless but, the sweat had long since dried off of his forehead and the weights had slowly become lighter and lighter in his eyes.

King Kai snored loudly on a long beach chair with his arms placed peacefully across his rotund stomach, a small bubble of snot expanded and contracted with his even breaths until a loud thundering exploded in front of him causing a portion of the Galaxy sized Grand Kaio Planet to shake viciously around him knocking the Kai off his chair and onto his face.

"Bubbles, get the hell out of my… car?" He pulled himself up and looked around as Goku walked towards him; the earthquake was caused only by Goku setting his weights down on the ground.

"Why did you stop, Goku?" The teacher asked glaring at him for disobeying his instructions.

"It got easy and boring; I was doing that for days!"

King Kai stroked his whiskers and turned around, "Remember, time flows differently in this place. A day of training here is worth years of training back on Earth. I'm sure you'll be ready for Black the next time you see him," the Kai turned to him as Goku's face turned long and disdainful.

"I haven't even turned Super Saiyan 4 yet! I've been training for so long and yet the results are the same!" He pulled the edge of his Gi down to just above his backside and pointed to the long lump pultruding from his tail-bone, "It needs to grow faster."

"These kinds of things can't be rushed," King Kai snorted and chuckled, "What should we do, tie you to a rock and yank on it with giant plyers?"

Goku rubbed the back of his neck and chuckled, "I guess that would be pretty ridiculous, huh?"

"Exactly, the tail will grow naturally the longer you physically push yourself," King Kai walked up to Goku and snapped his fingers causing a light to cover the Saiyan's body and leave a long, thick, body suit in its place. He appeared to be half marshmallow with it on as its massive weights immediately pulled him to the ground with a massive crater forming around him.

"That suit is filled with a Kachin substitute that weighs just about as much as the real thing," he snorted and walked away as Goku struggled to even move, "Call me when you finally stand up!"

…

A fiery blaze engulfed an entire solar system as its resident star became a Supernova, quickly expanding millions of miles out vaporizing planets in its wake. The darkness quickly consumed the area as the exploding star dissipated and condensed its remaining mass into neutron star material; Black watched from afar as life was replaced with death trillions of times over, "In the name of justice…" he whispered to himself as a light engulfed him from behind.

A large disc-like ship floated toward him from behind shining its beams of light in his direction as he slowly turned towards it, placing two fingers to his head he vanished. At that same instance he appeared on the ship as all of the crew and its leaders bowed to him with respect.

"Lord Black, I'm happy to say that the entire Planet Trade Organization is now at your full disposal spite Imperium's rebellion nearly a full cycle ago," a short soldier approached him and kneeled in front of him, "An army of trillions is now at your finger-tips, we will follow your dream of total annihilation of-" He was cut short by beam of energy slicing casually through his neck and cutting off his head.

Black put his smoking finger down and sighed, "It's not a dream; it's a reality. And it's not annihilation, its relief."

The other soldiers and crew members bowed their heads quickly with visible drops of sweat lining their temples, "For far too long the universe had been filled with mindless violence and destruction. Civilizations rise, they peak, and then they are brought to rubble by civil war of some kind."

Black approached the glass viewing bay of the ship, looking out at the darkness that surrounded him, "I once visited a planet with my old master, this planet was primitive with sentient life beating and killing each other for no good reason at all… we used a time-ring to view the planet a thousand years later and sadly, not a single thing had changed."

They looked back and forth between each other as they kept their heads down; most of the tyrants they had worked for were just conquering for conquering's sake but, this man had a deep purpose. A drive that went further beyond just wanting immortality or control over the cosmos; he genuinely wanted peace even if he was going about it in a sadistic way.

"It became clear to me that this Universe is plagued with corrupted life and if its ever going to recover, it needs to be reset completely," He looked at his own hand and tightened it slowly, "This time when life blooms in the Universe, the Kai's will act with a heavy hand. Eradicating threats and destroying those who sought to do ill upon others."

He sighed and turned towards his soldiers, "Of course corruption is inevitable and unavoidable. There will be thieves and pillagers but, it's the senseless violence I WILL not tolerate," the space ship shook around him as the metal of the ship bent inwards ever so slightly; he caught his composer and cleared his throat, "You are ending life in the Universe, yes, but never for a moment take a life without remembering why you are doing it… for justice!"

"For Justice!" They shouted in unison as he smiled back at them, they stood and filed out of the room leaving Black to turn back to the window, looking out at the distant stars that illuminated space in the distance.

…

Bruce tapped his foot impatiently as Trunks, Goten, and Piccolo looked out over the edge of the Lookout; appearing to stare down at the clouds, in reality they were searching the planet with their Ki sense locating individuals.

Diana looked back at Clark who shrugged and folded his arms, "Uhm, what exactly are we waiting for?"

Piccolo spoke up, "Black is clever, if he even suspects we're trying to bring Goku back, he'll try his best to stop us."

Goten continued for him, "So, we decided to locate some allies that can help us fight."

"If we go up against Black with an army, it'll at least limit his options," Trunks said as he opened his eyes and turned to Piccolo, "I found the junior's, let's pick them up on the way to him."

"Are you joking?" Piccolo answered, "Not only are they immature but, they're untrained."

Goten scoffed, "They're no stronger then we were when we had to fight Buu," he turned to Diana and flashed a cocky smile, "You wanna meet one of Goku's descendants?"

Diana blinked without actually knowing what to say next.

…

"In this corner we have last year's grand champion of the junior division," the old blonde man with a receding hairline waved his hand over to the child in the right hand corner before announcing his name, "Goku Junior!"

The boy smiled and waved, he was identical to Goku when he was a child fighting at the same exact tournament grounds. He wore a torn up blue Gi with a red headband tied across his forehead.

"And in this corner we have last year's runner up, Vegeta Junior!" The announcer waved over to the spikey haired child wearing a blue jumpsuit and white gloves.

The contestants stepped towards each other slowly with cocky grins on their faces eagerly cracking their knuckles, "I won't let you beat me this time!" Goku Jr. stated firmly as he tightened his head band and assumed a fighting stance similar to Goku's.

"You couldn't stop me last year or the year before, I'm just better blood," he smiled and assumed his own fighting position similar to Vegeta's trademark stance.

"We'll see about that!" Goku slammed his boot into the ring-floor and propelled himself through the air with a boom of sound he connected his elbow into Vegeta's guarding forearm creating a shockwave that shook the tournament grounds. The Saiyan descendants dematerialized from sight exchanging blows at speeds faster than the raging crowds could follow; Superman, Wonder Woman, Batman, Piccolo, Goten, Trunks, and Kara had arrived undetected and began observing the battle of the junior's from afar.

"Impressive," Superman muttered as he followed their movements easily, "I mean for mostly human fighters."

Bruce narrowed his eyes and Clark chuckled, "I meant they aren't even in the same ball park as Goku or I."

Piccolo stepped forwards and folded his arms as he watched them, "Their Saiyan DNA is so diluted over the decades that they can barely break the speed of light if at all; I'm not even sure if they could destroy a planet."

Trunks tapped Piccolo in the arm, "I sparred with them before; they aren't so bad."

Goten interrupted from the other side, "They remind me a lot of us when we were kids training to fight Buu."

"Have you ever thought about teaching them fusion?" Trunks asked putting a finger to his chin and looking up for a moment.

"That's not a bad id-"

"Focus," Piccolo grunted, "that's a conversation for another time."

Goku Jr. dodged a hook-jab combination only to fall victim to a reverse round kick that knocked him back towards the ring creating a small crater, "What's the matter? Can't keep the altitude?"

The dust cleared suddenly as the teen's aura exploded with a golden blaze and a furious shout that echoed across the stage dissipating the smoke with a wave of outward energy. His facial expression had taken one of rage and seriousness; Vegeta Jr. smiled and folded his arms floating down towards his opponent, "I thought you said to leave that trick for another time?"

"I lied," Goku stated simply dematerializing from sight and heading straight for his rival with a golden trail of light following behind him.

Vegeta Jr. smiled and tightened his jaw, he shouted quickly taking deep breaths as his onyx eyes were flushed with a turquoise haze, his hair shot up and he charged at Goku with equal speed.

Clark sighed, "We don't have time for this," He disappeared from sighed leaving the other heroes as the two fighters approached one another, so slow in comparison to Superman that they were moving in slow motion, the Man of Tomorrow stepped into the ring and stood between the fighters.

The children couldn't stop themselves as both of their fists slammed into either side of Clark's body; the area fell silent as the announcer nearly fell over from the shockwave but, made sure to keep his balance to narrate as best he could.

"It seems like a new challenger has… has entered the ring unexpectedly!"

The smoke cleared and the Superman was barely even bothered by the two children's attack as he stood in their midst, like a God with the sun gleaming behind him, "I'm sorry but this 'event' is over, we need to speak to you two."

Goku Jr. allowed his hair to return to normal with a short breath of relief, "We?"

Some fans began booing and others threw cups and snacks into the ring but, the man of steel barely noticed; Vegeta Jr. charged his aura further and strengthened his muscles quickly, "No one tells me what to do!"

He flew at sub-sonic speeds, landing mountain shattering punches all over the invulnerable Kryptonian and honestly, he didn't seem impressed. He caught the Saiyan's fists in his palms and looked him in the eyes, "That was uncomfortable…"

Vegeta's eyes widened as he pulled on his hands attempting to break the aliens grip, "Damn! Who the hell are you?!"

"He's with me," A deep voice that demanded respect called out from the stands as the group approached the fighters, "I apologize for interrupting old friend but we have some business with these two…"

The announcer smiled and fixed his glasses quickly, clearing his throat, "No, of course, this happens every few decades I get it; I'll prepare the runner-ups," he wiped the nervous sweat from his brow and walked off the stage, trying to calm the public as best he could.

"What makes you think I care about what the green-man says? I'm my own Saiyan," Vegeta pulled his hands from Clark's grip and crossed his arms, turning around as Piccolo rolled his eyes.

"You're 1/16th Saiyan, kid, don't flatter yourself," He smiled and turned away as well, "I fought side by side with real Saiyans fighting real battles… maybe I'd think about training you some time…"

Vegeta Jr. stopped in his tracks, turning his head slightly to see the Namekian flashing a cocky smile, "You- You knew him, didn't you?"

"I did," Piccolo turned and stepped forwards placing a hand on the young Saiyan's shoulders, "I can tell you all about him and his fighting styles, if you help me now."

Vegeta grunted shrugging the Namekian away; Goku Jr. smiled brightly and pumped a fist in the air, "I'm in! I'm in! I wanna hear all about your adventures Mr. Piccolo!"

Vegeta gasped suddenly turning around, "If that trash wearing idiot is going then so am I!"

Diana shared a look with Clark and Kara as they both turned to Bruce whom simply didn't seem fazed by their strange behavior, "Are these the only fighters we're picking up?" The Batman asked as he approached Piccolo.

"Actually, I was meaning to talk to you," Piccolo looked down at Bruce who raised a brow, "None of us have actual teleportation abilities and the flight to our next fighter is a long one; plus after that we need to go to other planets…"

"And?"

"And I don't think it's safe for you to come," Piccolo sighed loudly and closed his eyes, "I respect you for fighting the good fight even though you have no powers but, this will get very ugly and most of us will die more likely than not."

"I've been in greater battles than most of you combined, you can't leave me behind," He looked at Piccolo and grunted turning to Diana and Clark, "Tell him I can't stay!"

Clark sighed and floated upwards with Kara as did Trunks, Goten, and the Juniors; Diana stepped forwards as Bruce looked at his feet, "I always compared myself to all of you as an equal or maybe even greater…"

"You are great, Bruce, I can't tell you how many times you've taken me down on the mat and you've fought all seven of us at one point too," She placed a hand on his shoulder, "This time it's simply impractical for you to come."

Bruce put a finger to his chin, thinking for a moment as he looked up at her, "Yea, impractical… I'll be back," He pulled a capsule from his utility belt and tossed it at the ground opening a portal, "Don't wait up."

Diana sighed shaking her head, "He always has to look cool, doesn't he?" She floated up towards

…

Deep in a forest just outside Mount Paoz there was a quaking that spread all across the rocky range of mountains, something was pushed through several miles of tree and Earth pulling up huge clouds of dust.

The group arrived, now consisting of Superman, Wonder Woman, Supergirl, Trunks, Goten, Goku Junior, Vegeta Junior, and Piccolo; floating down towards the source of the shaking which seemed to be some sort of battle going on.

Superman landed first, "Even with my vision, I don't see-" That was as far as he got as he spotted the source of the battle and immediately cringed, "YOU!" He bolted at astonishing speeds slamming the fat, pink, gum-like creature across the forest leading to more shaking as the others landed. Superman dug his forearm into the creatures nonexistent neck and forced him into the ground as his eyes flashed crimson, "How are you here?!"

"That isn't Buu!" Piccolo shouted as Superman immediately paused and listened for a moment, "Well, it is Buu but, he's just a remnant of the one you all fought. This Buu has been drained of all evil intentions and even helped defeat his original!"

Superman pulled a fist back and prepared to plunge it through the demon's head, spite how little it would do, until a hand grabbed hold of his wrist; the grip was powerful enough to shock the Kryptonian from his rage-fit, "Don't hurt him or you'll regret it."

The man holding his arm was a young Indian boy, skinny but, built with a long black Mohawk a blue and white Gi to match, "I'm warning you, stranger," he tightened his grip as Superman stood from his position and pulled on his hand just barely getting it back from the new comer.

Piccolo stepped forwards with the others and began explaining the details to both parties, the teens however were more interested in each other, "So, you have a boyfriend back in your Universe?"

Kara blushed as Trunks scratched his head and looked away, "Nope, how about you?"

"Nope, no boyfriends," He received a giggle from the Kryptonian girl whom had to cover her mouth to avoid being too loud, she got over her laughing fit and punched him in the arm lightly.

"You know what I meant!" She said as he rubbed his bruised arm.

"Of course I did! No girlfriends either by the way," he rubbed the sore spot and sighed internally, 'Ow that really hurt too'

"Awe did the alien girl hurt Trunks? BooHoo-" Vegeta Jr. was clonked on the head by Goku Jr. who dragged him away slowly.

Diana sighed once again during this ordeal, "So you're Uub," she pointed as the Indian boy and then pointed to the fat blob who hadn't actually spoken yet, "A reincarnation of Buu, who is completely not evil and isn't trying to kill the Multiverse?"

Piccolo face palmed and looked up, "Finally!"

Superman put his hand on Buu's shoulder, "I apologize for hurting you, I wasn't aware that there was a difference between you and the other uh you," Buu tilted his head in confusion.

"Buu ok! You just lucky Buu didn't turn you into chocolate! Uub say that not good example!" His high pitched toddler voice stunned the group as the blob giggled and wiped off his Majin vest and belt.

"Uub would be right," Piccolo added, "But, we need both of your help with this…"

"I was just a toddler when Black attacked the first time; Goku hadn't even found and trained me yet, I think it's a good thing that I'm still around to fight," Uub smiled and stroked his Mohawk before facing Diana and the others, "It's nice to meet you all, and for those I already know, it's great to see you again!"

Superman leaned into Wonder Woman and covered the view of his lips with his hand, whispering to her, "It's like everyone Goku trains becomes this pure soul that could do no wrong," he was surprised as Piccolo looked over at him.

"Yea, he does that," Piccolo approached the center of the two groups as they all huddled together, Superman, Wonder Woman, Supergirl, Trunks, Goten, Goku, Vegeta, Uub, and Buu all gathered around the Namekian who began their assault plan.

"Ok, here's what's going to happen," They all leaned in to hear his plan as the strategist Namekian had the intellect and experience to come up with a solid plan of attack, "Uub was trained by Goku so he can use Instant Transmission, that's how we'll get there. Make no mistake, Black will be there waiting for us; he won't know how many of us there are so that's our advantage, Gotenks, Superman, and Uub will fight Black directly, the rest of us provide defense and protect Dende at all costs, he's the only one who can make the wish," he looked at them all over once more before smiling, "You may have been something else before this, Justice League, partners, even peaceful people who have no business fighting." He looked at Uub who frowned for a moment, he wanted nothing to do with this but, he had to lend his support; its Goku would have done. "But after this moment, you are a Z-Fighter and you will not stop until Goku is standing in front of us prepared to lead this team into the Heavens with him, win or lose."

The group smiled simultaneously, Trunks grabbed hold of Kara's hand for a moment neither breaking eye contact with Piccolo but, making sure to blush profusely anyways, "We are heroes and we might die out there today but, one thing is certain, you will be saving countless trillions at the cost of your own life; in simpler words, you will be a hero!"

They cheered around him, eating his words like sweet candy, almost lost in his motivation but, they all knew his words were not just for a pep-talk; the chances of dying in this 'war' were high almost too high for the likes of children but, they knew no better and so they cheered.

"Let's pick up Dende and head out," Piccolo smiled and placed his hand on Uub, "Everyone hold on."

…

Goku punched and punched and punched, this was his billionth punch and he had to make it count and so he threw his fist forward with all his might but, the continent sized crater he was sitting in didn't get any bigger, he was too tired and weak at this point. King Kai peaked his head over the side of a barricade near the Saiyan, "Are… Are you done?"

"Just about!" he said as he scratched his forehead, stretching his arms into the air at the same time, "I just don't think it's working…"

King Kai slapped his own forehead and sighed, "Goku, what are you scratching your head with?"

"Huh?" He looked around for a moment before smiling brightly, "OH WOW!" he hugged his long furry brown tail tightly as it wiggled in his arms, "I almost forgot how this feels!"

King Kai stepped over the barricade and dropped his hard-hat as he stepped forwards, "As you know, Saiyan's have a hard time managing their Ki without their tails, however; you've trained so far beyond that point that having the tail around actually boosts your ability produce Ki significantly, including God Ki!"

"Wait, so you're saying that my God Forms will be stronger too?"

"Not only that but, having easier control over God Ki might make it easier for you to transform into that Super Saiyan White you were babbling about when you got here," King Kai waved his hand around and fixed the Kaio-Planet beneath them restoring the long miles and miles of destroyed planet easily, "Now, you'll master Super Saiyan 4, which in turn will help you in the future!"

"Yea, sure, can I learn more about Super Saiyan White?" Goku asked as he sat down on the ground in front of the Kai.

"Unfortunately even I've never heard of a Super Saiyan White, I'm pretty sure that we all thought that it was just Black's version of a Super Saiyan Blue but, clearly it's an entirely new world of power that you've yet to tap into," The Kai smiled and held his hand up forming a small white ball, "And I told you I was serious about making you master Super Saiyan 4 by the way."

Goku cringed for a moment, "But… why? I mean the Ki Control thing and the tail and all the training I did, I'm already a hundred times stronger than I was before!"

King Kai tossed the orb of white energy into the sky and clutched his fist causing it to explode into an artificial moon, "When I'm done with you, you'll be a thousand times stronger, now LOOK UP!"

…

That's where this chapter ends… sorry about the long wait, job, school, life, it all sucks thoroughly but, I'll survive for sure XD.

Just to clarify, Super Saiyan 4 can't even touch Super Saiyan Blue… but the training required to master SSJ4 was intense enough to push Goku's base form (and thus his other forms) to new heights.

TrunksXKara forever…

Sorry if I didn't put enough effort into meeting these new characters like lack of development on Uub's side and the Juniors are mystery to even me so, I hope you guys like it!

Stay Awesome Gotham!