I wanna start by saying I think Raditz deserves a cool backstory being the brother of Goku the protagonist. I've never written any anime before so me writing the fights could be a total disaster. I apologize in advance. Just in case.

Across the 12 universes, all in control of the lord of everything, there exists a species of living beings that reside in the universes 6 and 7 that are modified and specialized in one thing. Fighting. These beings known as 'saiyans' have the potential to be the strongest life form any universe could ever have. The potential to challenge a god.

Universe 7

Planet Vegeta: Residency of the race known as 'saiyans'

Age: 739

In a galaxy very far away from Earth, there exists a planet with astounding power levels. Planet Vegeta. In the planet there lived a race. The warrior of the universe, one of the mightiest races that the universes could ever even dream of having. This fighting machines are especially designed to be powerful in combat. It was prophesied that saiyans were to reign the universe and be more powerful than Gods. However, their race are tame. Even more powerful beings had ruled over these saiyan. A being known as King Cold and his son, Frieza. They realized of their potential, of their mighty power. But their ruthlessness and their desobedience and even their power could be the reason of their extinction.

King Vegeta sat on his throne completely unopposed. He liked watching through the window and gaze at all the powerful saiyans get in their space pods to invade yet another planet. The saiyans had a 'business' with King Cold of wiping creatures off their planet and then sell that planet to the highest bidders. Normally the stronger the planet, the stronger the living beings and the higher the money people offered for the planet. Though King Cold had a mighty Force they always ended up relying on the saiyans to exterminate the stronger beings. Though it has to be said, the saiyans don't consider themselves part of King Cold's Force. In fact, they were looking forward to get rid of King Cold. But King Cold's power was immense. As far as the saiyans knew, no instrument has ever been capable of reading his power level. King Cold forced the saiyans to do business with him by submitting them with his power. And the saiyans only hope rested on king Vegeta's son's shoulders. Vegeta. Mamés after his father, Vegeta as an infant already surpassed the thousands in power level and it kept growing like a weed. Vegeta was still a mere child but people already thought he was the prophesied Super Saiyan, a legendary saiyan warrior that only appeared once every thousand years. King Vegeta was proud of his son, and today he would be sent off to a planet with powerful living beings, a special request from Frieza, King Cold's son who recently started giving orders to saiyans and will assume King Cold's position in the force. Young prince Vegeta would exterminate this creatures and return to his home planet, planet Vegeta, also named after after king Vegeta. All these thoughts were racing king Vegeta's mind while gazing through his window when he was rudely interrupted by one of his servants and his annoying feet tapping against the floor of the mighty throne room.

"Yes?" Asked king Vegeta's with boredom injected in his voice

"s-sire the space pods are ready and prince Vegeta is all set to leave the planet along Nappa and two other saiyans as you requested" When his son's name was mentioned, king Vegeta's ears perked up.

"That is great news Tulemaya! Perhaps I shall raise a feast in the honor of my son's first outing to another planet and hope for many more!" Shouted king Vegeta. However, Tulemaya remained in the throne room as if meditating to ask something

"What is it now Tulemaya?" Asked king Vegeta's bored

"W-well my king I was just thi-thinking that maybe, if you want of course"

"Spit it out!" Seethed king Vegeta

"Well it's just that m-maybe Vegeta would love a co-companion of his age" said Tulemaya and closed his eyes ready to receive another thundering shout, which he received

"You imbecile! Are you suggesting my son is too weak to be left alone? He has three adult saiyans to accompany him idiot!" Screamed king Vegeta.

"No I'm just sa-saying that maybe if someone his age accompanied him, a really strong child of course, maybe hi-his training w-would be better, they wo-would be..." He prepared himself for what he was about to say "Friends" He closed his eyes again ready to receive king Vegeta's fury again. But just as quick his anger came, the anger from king Vegeta's face dissipated.

"You know Tulemaya, that's actually not a bad idea. But how would we be able to decide and declare the second strongest saiyan that's Vegeta's age?" Wondered the king. His face lit up almost instantly "A tournament! Of course! A tournament where only saiyans with my son's age can participate. No, we'll stretch that. Let's make it that they can be two years older and younger than my son! I've got to give it to you Tulemaya. I didn't know smart ideas could pass through that skull of yours!" King Vegeta said in delight. However, Tulemaya was too busy sighing in relief to give an instant response.

"th-thank you your highness" he politely responded.

"Well? What are you waiting for? Go tell my son that the trip has been postponed! And that another companion will accompany him" Said king Vegeta in his usual commanding voice that normally made people listen to him and cower in fear.

"Y-yes my king" Tulemaya hurried off to find prince Vegeta and tell him about the new change of plans.

"Now this is going to be interesting" Said king Vegeta that though at first hated the idea, he now relished the thought of it. The saiyans that were going to be with his son were nowhere his age and though he didn't believe in making 'friends' but he did believe that it would help Vegeta to have an inferior being he could order around, just as practice for when he is king and reigns over the saiyan race, maybe, after defeating King Cold once and for all.

Well I'll be waiting to see if this is popular. For now, bye!