So imagine this. We get a brand new character who is a saiyan and somehow related or knows goku. His name is Torakk and he arrives on earth after finding out that the majority of remaining saiyans live there. I dont know how it would fit into the timeline but it is a time of peace: Goku farming Gohan studying and everybody just chilling. He keeps his power level supressed as much as he can slipping by the z fighters attention. He then studies them for a few months while planning his actions. One day when goku is out training with Whis he styles his hair goku style and quietly slips into gokus house. Chi chi is in the kitchen cooking so she only turns her head for a moment to see who came in not noticing the tiny diffrences. He starts walking through the house when he runs into goten. He appears sceptical at first but Torakk throws him off by muttering out some stories about training with Whis and lines like "come on Goten I havent changed that much have i?". That seems enough for Goten who just shrugs his shoulders and runs off doing whatever. Then it is just the waiting game trying not to get in the way too much and avoiding the family. When goku arrives and comes into the house everyone is shocked. Then Torakk comes out and with a smirk says: "Took you long enough Kakarot". He then deliveres a speech about Gokus true self being buried under the life of a earthling and how it hurts him to see the saiyan race once feared by Frieza and the strongest of the universe. Goku provocated by the harsh words tries to end him then and there but Torakk escapes and goes in for the long game. The z fighters all arrive after sensing the power surge but they are too late. Goku then explains what happend as the fighters realize they have gone out of shape. They then all go train for a week and split up. Torakk however uses this to his advantage and studies them and confronts some trying to get into their heads manipulating them while trying to make it look like he is only trying to unite his race which rattles with their heads. Vegeta especially gets targeted with with talks of the great saiyan empire being his once again. He doesnt fall to it but it leaves a mark on his mind. The peaceful time comes to an end on the 7th day when after meeting Torakk Tien tries to raise his power level to alert the rest of the fighters. Torakk however mistakes this for a attack and kills him on the spot. No final moments no sugarcoating pure showing of what he is capable of. When the z fighters arrive Torakk is no longer there Leaving behind a huge crater and a dead Tien. They are left shocked at his death but now have a real motivation to find Torakk and make him pay. Torakk meanwhile doesnt even bother hiding his power level anymore as he knows this is the make or break part. He stands calmly in front of the very place goku grew up on mount Paozu when the enraged z fighters arrive but he doesnt start fighting yet. He speaks to Vegeta: "You bowed to Frieza for years like an idiot and now you get ordered around by Kakarot? Dont you see that this is not how it was meant to be? You the saiyan prince going on your knees for inferior brings." Vegeta takes a step forward, than another one. The fighters are left stunned as Torakk starts talking to the rest of them one by one using their weaknesses and fears against them. He doubts their trust in Picollo as he is a former villain, crushes Krillin mentally because of his insecurity against stronger opponents, makes fun of Gohan for his peaceful attitude which he finds especially disgusting for a saiyan, tells Yamcha that nothing he can do will make him relevant again and ends it by laughing at Gokus belief in them. They are left stunned all fighting their inner battles as Torakk lures them over to his side offering power a new start and more. Then it all goes bad: Vegeta starts attacking the people around goku and the z fighters start fighting among themselves as Torakk stands smiling not defeating people in a fight but crushing them mentally. Goku then tries reminding the deserted z fighters what makes them who they are and that some have too much to lose on the earth. Slowly yet surely the tides change. People start realizing that there is only one side they should be fighting for. When Vegeta eventually realizes what he is doing and goes back to goku Torakk slowly stretches and suddenly launches himself at Yamcha. What then happens is Torakk quickly overpowering people quickly shocking them while talking about their weaknesses and flaws. One by one they are knocked down but not dead. Wheather it is by force or manipulation he is determined to do what is good for the saiyan race. Then it is over. Goku is on the ground hair slowly going black hardly brathing. Torakk lands on the destroyed ground calmly looking around planning his next step. But then it happens. He hears something behind him but as he turns around his face goes pale. It is Yamcha launching one last attack at him. This is the last stand. All of his power, the years of frustration and fear all put into one last attempt. Torakk tries to block it but it is too late his tired body can barely move. He gets swallowed in the light stumbling and eventually falling to the ground. Yamcha barely stumbling walks over and prepares to finish him but as he swings he hears a quiet voice. It is Gohan telling him that everybody deserves a second chance just like picollo and Vegeta. Yamcha looking at him starts thinking about it before his body gives out and he collapses.