Savior Of The Multiverse (Male saiyan reader insert x massive crossover)

The Training That Started It All

Y/n opened his eyes and saw a building that the others called the hyperbolic time chamber. My father Vegeta, Trunks from the future, and Gohan had all put our hands on Goku's shoulders as he used instant transmission to bring us here. I had never seen anything so strange. The tower we were on wasn't so bad but the building that held the time chamber was... small to say the least.
Goku: "Alright guys, time to start our training in the hyperbolic lion tamer!"
As soon as Goku said this, a strange being came out of nowhere.
???: "Goku?"
Goku: "Yes Mr. Popo?"
Mr. Popo?: "Begone maggot."

   Then what followed was Goku being thrown off the lookout and all that was heard were his screams. Y/n shivered, and looked toward his father who only shook his head. Goku flew by at amazing speeds and grabbed Gohan.
Goku: "WE ARE GOING IN FIRST AND DONT ARGUE GOHAN!" With that he drug Gohan into the Hyperbolic Time Chamber. Y/n had no idea what to think until this Mr. Popo came up to him.

Popo: "Hmm. You seem to be a new maggot. Tell the almighty Mr. Popo your lowly name."
Y/n: "I-it's Y/n sir."
Popo: "A maggot with manners? What a rare sight. All you need to know for the moment maggot is that I am Mr. Popo and I am at the top of the pecking order."
Y/n: "O-of course sir."

At this time Gohan and Goku came out of the chamber. Goku being ssj2 and Gohan being ssj. Their ki and power were out of this world. Y/n couldnt wait to get in there and train with his dad and his little brother... who was actually around Y/n's age at this point. Time travel is a strange thing.

Y/n's POV

Turning toward my father I see him nod and we were about to enter the chamber when my mother, Bulma hopped out of her ship she flew up in. My father of course was disgruntled.
Vegeta: "What is it woman, we are trying to train!?"
Bulma: "Keep your pants on Vegeta, I brought some training suits for you and our sons."

These just looked like your normal clothes/Gi but were weighted heavily. Mom then continued to tell us that in total they weighed about 150 tons. Trunks and I thanked her as Dad huffed and we went in to begin training.

Cell's POV

Cell: "So dear brother and sister I have found you. Time for a family reunion of the vile sort."

I flash a malicious grin and fly off toward the location of #17 and #18.

Y/n's POV

The training went on for what seemed like a year, but of course that is what the chamber is used for. I found out that I had a power above the other saiyans that I know, a super saiyan beyond the super saiyan 2. I call it super saiyan 3 for convenience, but I cant let it be known. Dad's pride would be left in tatters and Goku wouldn't stop bugging me till I fight him. Either way there was a more important matter at hand: the androids and that monster cell. Ugly ass bastard.

Y/n: "Father, brother why dont we all battle against Goku and Gohan so we can judge each other's strengths now that we are stronger? It would be good practice before Cell."

Everyone agreed with me though Dad wasn't very pleased with it. This however came as a surprise to no one. He's such a spoil sport.

A/n POV

Oh ho ho if only they knew what was going to happen to them during this training session. Heh heh heh.

But off in another place. Two evil beings were planning something vile.

??? POV

???: "Well my creation. I believe it is time to change history. Corrupting those who are good and strengthening those who are evil. The more energy we gather the better."

??: "Yes of course ma'am. I am at your beck and call."

I giggled maniacally and teleported us to our first destination.