Dragonball X: The Ultimate System

Everyone looked on with wide eyes and mouths, including Turles and Raditz from afar. Bulma could see what was going because she had binoculars. This wasn't due to Android 13's transformation, but the strength of his transformation.

"I-It went to 3.5 b-billion!" Bulma had never seen high numbers like this before, none of the Z-fighters should be able to match this. Perhaps Bardock or Gine could to some degree, but Goku and the rest couldn't.

One had to know that this strength level was stronger than Perfect Cell before his self-destruction!

"This Gero guy, I heard he was a part of the red ribbon army. I beat them long ago, so the past should be left in the past. I think we can come to an agreement." Goku recalled the information he received from Trunks, he even recognized the symbol of the red ribbon army.

"Yeah, Yeah, we should let everything be bygones, but that ain't how it's going to be. I was programmed to kill your a** and that's exactly what I'm going to do!" Android 13 laughed wildly again before rushing Goku.

Goku could only power up further to fight Super Android 13. He transformed into Mastered Super Saiyan, this increased his strength by 80 times that of his base form.

"Hahaha!" Thirteen punched at Goku at near lightning speed, leaving Goku on the defense. It didn't take long for Goku's defenses to be broke, as he was knocked away.

Thirteen never let up his assault and continued to chase after Goku and bash him. Goku's physical attacks did nothing to Thirteen. Android 13 hit Goku with a point-blank Deadly Bomber, he tried to block it but the blast was getting bigger as he slammed into the city below.

"Dad!" Gohan called out in horror.

BOOM!

A large explosion in the shape of a sphere annihilated buildings, while also killing a high number of civilians. The islands shook, but at this time, Gohan and Tien went over to engage the Android. Kayn had returned to Bulma to ask her favor, in which, she immediately agreed to what he was asking.

Raditz wanted to join in on the fight after seeing Goku get presumably defeated. Kayn said he had everything under control, he just needed to ask Bulma something before doing what he wanted to do.

With that, Raditz used Instant Transmission to leave with Bulma for something. But this was in accordance with what Kayn wanted Raditz and Bulma to do.

...

Right then, Goku appeared beside Thirteen and unleashed a Kamehameha Attack. Thirteen turned to look but didn't move, he only grinned as he was hit with the blast at point-blank. Tien and Gohan had already been defeated but Gohan still came back, ready for another battle.

Goku's breath was haggard after releasing a large amount of energy, but he was far from drained. Suddenly, Thirteen reached out from the smoke and grappled Goku from both his arms. Goku struggled and sent his knee towards Thirteen's chin, but this only caused him to grin as he moved his head back down to its original position.

"It's useless to fight back and struggle, just die already!" Thirteen then started to dive down towards the mountains beneath them, with Goku still unable to break from his grasp.

In mere moments, Thirteen slammed Goku in the mountains, causing them to collapse. Thirteen put his foot on Goku's head before powering up another Deadly Bomber.

"Get away from my dad!" Gohan appeared behind Thirteen, landing a kick on the side of Thirteen's face. Much to Kayn's surprise, Thirteen was actually sent flying. Kayn could feel that Gohan's strength had risen for a moment before return to its standard state. Gohan was also a complete Super Saiyan, Goku and Gohan trained like this every day.

"Dad, are you alright?" Gohan quickly helped his father up.

"Wow, that was a nice kick, Gohan. Looks like the training paid off, but it isn't over yet." Goku smiled and complimented his son, but his expression turned serious soon after, as he stared in Thirteen's direction.

"The little rascal strength isn't that bad, but from what I know, he's your son. That makes him the second target of destruction, then I'll hunt down that fine wife of yours and kill her next!" Thirteen wiped the dirt off his c.h.e.s.t and said with a sinister expression.

"You won't get that chance, we've dealt with foes like you in the past. The Red ribbon army is gone, you're just the last of them who'll soon follow." Goku said with confidence.

However, Gohan didn't like what Thirteen was saying about his mom, he thought that he would do everything he could to defeat this Android.

"Android 13, was it? Too bad, there are too many things that need closer attention than you, but you'll be of use to us for further study." Just as the Father and Son pair were about to engage Thirteen, Kayn came over and spoke.

"Oh, it's you, I don't recall seeing you in the recorders but none of that matters, we know now." Thirteen's eyes were scanning Kayn, as unknown coding could be seen flickering in his eyes.

"No time!" Kayn said nothing more and rushed Thirteen, who immediately sent a punch toward the approaching Kayn. Kayn reached out and grabbed Thirteen's fist, then he started squeezing it.

Before Kayn could do anymore, Android Thirteen punched out with his other fist. But it was too late for Thirteen, he quickly had his fist crushed while Kayn sent a simple punch toward Thirteen's approaching fist.

Upon contact, Thirteen's whole arm was utterly destroyed. Goku and Gohan were shocked, but Android Thirteen was even more shocked. Thirteen didn't say anything, but he growled in fury before he resorted to using his legs to kick at Kayn.

"Getting desperate, I see." Kayn merely sidestepped these kicks, then he punched Android 13 through the c.h.e.s.t.

"H-he punched a hole right through him..." Gohan looked on with wide eyes, they couldn't even damage or hurt this Android, but Kayn looked like he was tearing through the Android as if it was made out of aluminum foil!

"Guahhhhh!" Android 13 seemed to have gone berserk and started hurling kicks at Kayn in rapid succession. Kayn's body looked like an afterimage as he quickly arrived in front of 13 again, sending a powerful punch towards the gaping hole in his c.h.e.s.t.

This time, Android 13 was punched in half, then Kayn sent an energy attack towards Thirteen's lower body. As for his upper half, it no longer moved; Android 13 was defeated. Thirteen's mouth was wide opened with black smoke fuming from it constantly.

"You really destroyed it just like that?" Goku walked over to further judge the Android's condition, it was indeed defeated! Goku laughed and complimented Kayn, but something sparked in Goku witnessing all of that.

"Yeah..." Kayn thought for a moment, he wanted to have Bulma take this Android and reprogram it if she could.

"I think we should destroy the rest of its body, it no telling if it could come back or not." Goku stretched out his arm to finish it with an energy attack.

"Wait, I want Bulma to study this Android, maybe it could be used and reprogrammed." Kayn hurriedly and said.

"Reprogrammed?" Goku didn't understand what this meant, but after hearing that Kayn wanted to use it; he understood.

"Yeah, Bulma's really smart, I'm sure she can fix this Android and turn them to our side." Goku nodded and said.

"Ah, I have to go check on Krillen and everyone else!" Gohan took the Senzu Bean bag from his back waist and flew off in a hurry to aid the others.

As soon as he left, Bulma, Raditz, and Turles appeared.

"What? The Robot is already defeated?" Turles looked at the Android, which was now a scrap heap.

"That Android was far stronger than you, how did you defeat it?" Turles knew that Android's strength far outweighed theirs, it was no way Goku could win so easily.

"Haha, it wasn't me, it was Kayn. I didn't have a chance alone, but he beat it with a few punches." Goku waved his hand and pointed to Kayn.

"I knew it wasn't you Kakarot, you're far too incompetent to defeat that Android." Turles grinned before looking back at the Android.

"Well, Turles, you're pretty weak yourself, I don't think you'd survive a few punches from the Android." Goku laughed and said.

"Kakarot, don't start with me!" Veins of irritation popped out of Turles' head hearing Goku's comment.

"Huh, I don't understand what you mean. What did I start?" Goku seemed confused.

"Okay, it's over; the Android was defeated. Bulma, Raditz, did you guys bring them." Kayn didn't need to ask this, but he did anyway. What he asked for could be seen, as they held them for all to see.

"Yep, here are the Dragonballs, what are you going to use them for?" Bulma handed what Dragonballs she had over to Kayn, while Raditz handed over the ones he had in hand.

They usually gathered the Dragonballs and kept them at their house for emergencies... or for 'cough cough' making Bulma look younger...

"To find someone who's hiding from us, it won't take long. Hmm..." Kayn had long sensed that a fight had broken out between Piccolo and the other Entity, but the Entity wasn't as strong as Piccolo from what he could feel.

The Dragonballs orbited around Kayn, then he pointed at the Android. He began to explain to Bulma again, and she completely agreed to try to reprogram the Android. Kayn told her that there was a special chip inside this Android designed to target and kill Goku.

Raditz decided he wanted to follow everyone else, but he took Bulma home first. As soon as Raditz and Bulma left, they felt an energy signature heading their way. Kayn looked in the distance, he didn't recognize this power signature, but he felt that it didn't have any bad intentions.

"Oh, it's him again, the guy from that time!" Gohan said with a smile. This particular guy was extremely friendly towards him, and he didn't know why, nor did he know him.

Gohan came over with Krillen, Yamcha, and Tien. All at once, they could also feel Vegeta coming this way, he was accompanied by Nappa from what they could sense.

Hearing Gohan's words, Kayn had already figured out who It was. The first to appear was Vegeta and Nappa.

"Oh, it looks like the Robots were already beaten, what's the point in being here then?" Vegeta looked around, he could see the destruction in some parts of the city and knew he was late to the fight.

"Well, it looks like we won't be getting any action. It isn't a big loss, but it still would have been good to fight something." Nappa patted his desolate head and said.

"It seems that guy from that time is here..." Vegeta didn't bother looking in that direction, he really didn't care. But he was interested in this guy's origin, he was another Saiyan, after all.

Eventually, they could see his figure in the distance getting closer and closer. And sure enough, it revealed itself to be...Future Trunks.