*Takes place in between Buu saga and super.
Goku and the Z-gang gathered around a tall metallic oval shaped structure. Bulma was beaming at the stunned expressions of her friends after catching sight of her latest invention.
"So, what does it do?" Videl asked. The same question came on the minds of everyone there, from Goku and Vegeta to Chiaotzu and .
"The machine's designed to transform anyone in it into an exact copy of someone else based on the data the machine has about that person, using radiation inside of the chamber. I've incorporated the data of the physical body structures of almost all of you, even from when some of us were younger, don't get me started on how I did that." Bulma said with a sigh.
"So the user's body is exposed to radiation which causes their bodies to morph into an exact copy of someone else?" Gohan piped up.
"Yeah, that's the short end of it. But it even changes the clothes of the user too!" Bulma said with her hands on her hips proudly.
"Is that even how radiation works?" saked.
"Well it can be, especially when someone as smart as me is using it." Bulma said with a smirk.
"What are you going to do with it?" Goten asked.
"Well.." Bulma began as she twiddled her thumbs. "I was planning on getting one of you guys to test it." She said with a nervous laugh.
"Not it!" Almost everyone said almost immediately after that, not wanting to throw their pride away and go through the embarrassing process of becoming someone else.
"Awww come on." Bulma pouted. But before she could say anything someone cut in.
"Don't worry, I'll test it Bulma." Goku said, to which everyone gasped.
"No way Goku! Do you even know what that machine might do to you? You'll be stuck as someone else IF it does work, and if not who knows what you'll end up as. No way!" Chi-Chi screamed as she clung to Goku's arm.
"That's not true! I've programmed this machine so that the effects only last for half an hour. And even if something went wrong, which I doubt, we can always fix it with the dragon balls!" Bulma said defensively.
"Come on, don't worry Chi, it'll be fun!" Goku said, trying to rid himself of the ferocious grasp of Chi-Chi.
"Fine, but I swear if he even comes out with a slight deformity I swear Bulma your dead!" Chi-Chi growled. Vegeta twitched at the threat.
"Alright Goku, you can step inside the chamber now." Bulma said as she pressed a button on the side of the 3 meter long and 1 meter wide machine, causing the large doors on the front to open.
"Ok." Goku said with a slight bit of nervousness. As soon as he was inside the doors closed and Bulma started to type on the computer on the side of the chamber with record breaking speed.
"Let's see here, who should we transform him into first? Any votes?" Bulma asked as she turned her head to the Z-team, only for complete silence.
"I guess you all will feel pretty weird about that, I get it. Which is why I programmed a randomization option! Annnnd...click!" Bulma said happily as she dramatically lowered her index finger to press a large red button next to the computer labeled 'random.'
The gang watched on in awe as the machine lit up with a blue glow, though surprisingly silent. However all the action was inside, where Goku was starting to feel dizzy.
"Wh..at's, h-happening?" Goku stammered, as he rubbed his temples. He could feel the blue radiation burn him and seep into him, just as he was beginning to ponder if he was going to change or just feel sick the whole time he began to feel the pain of his body changing.
Bones twisted and cracked in his body as he began to lose a lot of height, to the point where he felt like he was a kid again. Almost all of his muscle receded into his body and disappeared, while bits of fat were added to his now much scrawnier legs, feet, arms, face and body giving him a cubbier appearance and the face and body of a child. The last thing Goku saw before passing out was his now smaller gi being morphed into a blue spandex suit with the orange part becoming what looked like saiyan armor.
A minute later Goku came to, as the blue tinted radiation finished dialing down. He slowly got up as the doors opened. Everyone gasped. But the shock didn't last for long as almost everyone burst out into a fit of laughter, even Piccolo and 18 couldn't help but chuckle. Gohan also nervously chuckled, a small blush appearing on his face.
"Hey, what's so fu-" Goku didn't understand what everyone was laughing at until he spoke. He instantly recognized the voice, it was Gohan from when he was clad in a suit of saiyan armor on Namek. He looked at his hands, which were small and adorned by white gloves. After realizing the humor in the situation, Goku couldn't help but chuckle too.
"Boy Goku, I thought that sons grew up to resemble their fathers, not the other way around!" Bulma said before going back to laughing, and it seemed as though her joke only boosted the laugher around her.
After about 30 seconds the laughter had finally dilated down, though some still left out a small chuckle here and there for the next 10 seconds. Finally it was Vegeta who spoke up.
"Kakarot, don't you notice something?" He asked with a teasing tone in his voice and a smirk.
"Duh Vegeta, even I can notice something so obvious." Goku said, looking down at himself, blushing a bit when speaking in his son's voice.
"I'm not talking about your body, more so your power level!" Vegeta said before chuckling. The fighters of the Z team gasped as they sensed Goku's power level, including Goku. It was the same as Gohan's after getting his power unlocked by Guru, so not even close to 50,000.
"Oh man! Bulma you didn't say that my power level would decrease!" Goku exclaimed as he faced Bulma.
"Sorry 'Gohan,' I guess your power level is also changed to match that of who you're becoming, but you can stand being much weaker for 30 minutes, can't you?" She asked with a giggle.
"Yeah, I guess." Goku said in defeat as he slumped his arms down.
"It's ok dad! It's fun being a kid!" Goten said from right behind Goku, before examining Goku/Gohan's body with childlike awe.
"Well, you're not wrong there, after all I was a kid once." Goku said with a large grin and a hand scratching his back.
"I forgot how bad that bull cut looked on you Gohan." Piccolo said with a sly smile. All Gohan could do was look down and nod.
"Wow Gohan, you sure looked cute as a kid." Videl giggled. Which caused Gohan to only blush harder.
"Shut up." He whispered, so quietly not even Piccolo heard.
"I don't even know what to think now! How am I supposed to be attracted to...my own son? Ugh I can't even think of it!" Chi-Chi said, which caused a few people to chuckle.
"Hey dad, wanna spar?" Goten asked.
"Uhh, I don't know, at this level you could probably defeat me in two strikes, in base!" Goku laughed.
"Ahh dad, you never turn down a spar." Goten pouted.
"Alright, let's go near those trees!" Goku said, pointing to a couple trees outside of the CC balcony where the gang initially gathered.
"Ready?" Goten asked, getting into a stance.
"Ready!" Goku said as they began.
The rest of the gang just spoke to each other while watching the fight, where Goten was easily overpowering Goku even though he wasn't even using 50% of his base form power. And after a while Goten landed a finishing blow, sending Goku careening into the ground where he slowly got up after a few seconds.
"Wow, I couldn't do anything! No way can I keep this power, I don't even think I'll be able to go super." Goku said with a frown, looking at his hands.
"Goku, you want me to fix that?" Piccolo asked, joking. Goku looked to where Piccolo was pointing to see that one of the shoulder guards of his new armor was gone.
"Oh, no thanks !" Goku said. Everyone immediately turned their heads towards Goku after hearing his response.
"D-did you just call me mister?" Piccolo asked, dumbfounded. As was everyone else.
"Isn't that what Gohan calls you?" Chi-Chi worriedly asked Piccolo, to which he slowly nodded. Goku then turned to face Chi-Chi.
"What's wrong mom?" Goku asked. Before his eyes bulged in realization as to what he said as he clasped his mouth.
"MOM!? Bulma, what the hell did that thing do to him!?" Chi-Chi yelled. Bulma sweatdropped as she gulped in fear.
"Uh, did i forget to mention the machine may alter the personality and possibly even memories of the user into that of the target as a..possible side effect." Bulma said with a shrill voice with a nervous chuckle.
"Dad," Gohan began. "What's 33 times 27?" He said with a stern voice, even though he was much more worried deep down.
"891." Goku said matter-of-factly. Confused as to what Gohan was doing.
"The square root of 1296?" Bulma continued.
"Easy! 36!" Goku said.
"Pi to the power of 4!" Chi-Chi said.
"Uhh, 97.4!" Goku said confidently. Immediately everyone dropped to the floor anime-style.
"Well, at least he's smarter, right?" Chi-Chi said.
"How do you feel, dad?" Goten asked.
"Well, I feel just fine. But it's like my view on everyone has changed. I feel more attracted to Chi-Chi as if she's my mom, and it's beginning to feel weird thinking about her as my wife. I'm seeing Piccolo as a much wiser and cooler guy than I used to and I can't even think of Gohan and Goten as my sons!" Goku exclaimed. Piccolo couldn't help but smirk.
"Bulma! How long has he got?" Chi-Chi said with growled teeth, apparently not being a fan of the idea of her husband being her son who didn't even love her as a wife but as a mom.
'Well it says here he's got 12 minutes, but don't worry he'll turn back!" Bulma said reassuringly.
"Oh Goku I told you that you never should've gone in that machine!" Chi-Chi snarled.
"I-Im sorry mo-Chi-Chi." Goku said frantically, bowing up and down over and over again.
"Oh this is rich." Vegeta whispered to himself.
"This is embarrassing." Gohan whispered to himself.
'This is fun.' Goten thought to himself.
'This is cute.' Videl thought to herself.
'This is…' Chi-Chi thought to herself.
12 minutes passed with everyone mostly making small talk with each other or inquiring with Goku to see what else had changed about his mind. Finally after Bulma said it was time everyone huddled around Goku, and nothing happened.
"Bulma, what's wrong?" Goku asked, looking at his hands and feeling no change.
"Uhhhh. It says here it's a minute over time, I don't get it." Bulma said in almost a whisper, but loud enough for everyone to hear.
"BULMA! I swear don't tell me!" Chi-Chi said, her face almost glowing red with rage.
"Don't worry! We can simply put him back into the machine and transform him back into..well himself!" Bulma said.
"Oh no we don't! We're not using that blasted thing of yours!" Chi-Chi screamed.
"I'm sorry Chi-Chi but this looks like the only way. We may have had a small mess up but we can fix that." Goku said to which everyone nodded in agreement.
"Alright Goku get in." Bulma said, as Goku complied.
"Alright now let's see here." Bulma mumbled as she typed into her computer to bring up the option to change 'GohanGoku' back into actual Goku. However while doing so, a bit of the coffee she just so happened to be drinking accidentally spilled onto the keyboard, causing sparks to to fly from it and, after a few seconds, explode.
"AAHH!" Was the words that came out of everyone's mouths.
"WHAT DID YOU DO!?" Not only Chi-Chi but also Gohan, Goten, Vegeta, Piccolo and a few others said in unison.
"Oh no! The keypad burst! The only option now is…" Bulma stopped as she slowly turned her head to face the large randomization button she'd pressed the first time.
"What?" Chi-Chi asked.
"I think we'll have to keep randomly changing Goku with the last working button until he changes back into himself." Bulma said.
"There has to be another way." Krillin said.
"Right! The dragonballs!" Trunks continued.
"We can't, they were already used a month and a half ago after we defeated kid Buu, remember?" Gohan stated.
"That's right, with the dragon balls we would have to wait at least another 8 months or so. While using trial and error with the machine can probably take only a few days, I mean I don't have that many entries in here." Bulma said.
"I can't wait to see what else Kakarot will become. Who knows, he may even become you harpy and end up taking over your place." Vegeta joked, turning his head towards Chi-Chi.
"Huh where'd you g-" Was all Vegeta managed to let out before he was clonked in the head by Chi-Chi, Vegeta grunted in pain.
"Thanks Chi-Chi. Anyways, here we go everybody." Bulma said as she pressed the button.