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[Dragon Ball Z] What if Bardock had went to earth with Goku?

* Remove everything from the retcon from Dragon Ball Minus. Work with the Bardock from "The Father of Goku" movie. This one probably hooked up with some female Saiyan to have Goku, maybe Fasha or whatever.

Scenario: Bardock does not make a last stand, and the saiyans still get destroyed. He takes a ship and goes to find his son on earth. Goku has just hit his head. Bardock finds him with Grandpa Gohan, and takes him back. However, Gohan offers to teach Bardock about life on Earth, and Bardock accepts. Bardock and Goku become neighbors with Gohan. Bardock settles to live a quiet life with his son, but will still train and teach him about his home planet. Due to freak luck, Gohan still dies, but Goku still has his father. Bardock inherits Gohan's property. So when Bulma comes around, things are different.

What else changes? How does the character of Goku change? The others?
gpt
Bardock sends Kakarot off (no one but Gohan ever called him Goku) with Bulma because why not, worst case he can probably eat her.  Brardok keeps his training up but generally considers Earth a bit of a backwater where he is hiding out.  Kakarot keeps his desire to get stronger, but probably acts more like Raditz.  

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Dragonball doesn't change much.  Bulma smooths down the rough edges of Kakarot somewhat just like the Anime but making him less abrasive and annoying to be around.  While there are some differences, ultimately the story line ends up playing off mainly the same.  Kakarot still marries Chichi but doesn't become a farmer as that is beneath his warrior heritage.   He makes bank off of all world martial arts tournaments and other feats of strength as necessary.  Bardok isn't idle, but he tends to do other stuff and really isn't up for world domination.  The Dragon cannot restore a planet (for plot reasons) so Vegeta stays destroyed.  

DBZ is slightly different.  Raditz finds his father and brother on Earth, he's stronger than Kakarot but Bardok is very close to his level.  Piccolo plays a much smaller role in the series.  Bardok eventually convinces Raditz to join them when they figure out the dragon balls.  Prince Vegeta overhears and decides to go visiting.  

The Saijan saga plays out similar, Kakarot never died and ends up being the weakest (but getting stronger) character.  Bardok and Vegeta fight while Nappa takes on the sons.  Kakarot doesn't learn the spirit bomb or the Kaio Ken, but has been training hard with his father and brother for a year.  The Z fighters still win, its narrow, Bardok allows Vegeta to escape because of some honorable reason.

The Namek saga is where it falls apart.  Bardok has gone SS in some continuity.  So Kakarot is sent on ahead, again while he's strong he doesn't have that special training to make him Goku(tm) with Bulma and Yamcha (still dating) .  The Namek saga plays out mostly the same, Vegeta fights Kakarot and can beat him up with great difficulty.  Eventualy the Ginyu force arrives and tries to take the Dragon Balls.  Fight is MUCH more even (rather than a Goku stomp) because Super Kami Guru unlocked Kakarot's hidden potential which was immense.  

Vegeta and Recoom fight, Vegeta loses but then unlocked Kakarot fights and easily defeats Recoom.  The fight continues and then the ship shows up with Piccolo, Raditz and Bardok onboard.  Those three, along with Kakarot and Vegeta easily crush the Ginyu force.  Ginyu does the body swap with Bardok, but Bardok swaps back before Vegeta kills him.  

Back to mainly normal,  Piccolo goes to get the last Dragon Ball while everyone else rests up.  Frieza appears and the fight is on. Due to the fight Vegeta got his boost, he's as tough as Kakarot again.  Raditz and Bardok trained under 100g and are both actually higher than that.    Piccolo finds the shattered remains of Nail and fuses with him and gets the boost from SKG.  Dende comes along.  

Frieza goes through his first 2 forms pretty quickly as they are outclassed by the Z fighters.  Third form does better because they insist on one on one fights.  Frieza takes down a few of them, not knowing that Dende is healing them.  Kakarot does very well in one pass so Frieza changes to his final form, unpowered.  Bardok hasn't entered the battle yet letting his sons and the prince go first.  

Finally Frieza gets annoyed and decides to destroy the planet.  All the Z fighters join up for a massive Final Spirit Cannon to deflect Frieza's enormous planet buster attack.  They are able to narrowly deflect the shot back into Frieza, but all of the Z fighters have collapsed.  Game over...

The Frieza returns, cripples Raditz and Vegeta and Kills Kakarot with his exploding attack.  Bardock loses his mind and goes SS1, and they fight.  Blah Blah, good wins, evil dies.

Bardock learns the Teleporting technique after not dying.  Kakarot learns the Kaio Ken and Spirit Bomb, after dying.  Raditz and Vegeta develop a strong rivalry .  Bulma breaks up with Yamcha (he's useless) and both Saijans spend their time courting her while beating up on each other (it is set in the DB universe) 

Next we move to the cell games but that's just Kakarot becoming Goku for the most part (Gohan exists but he's a kid and doesn't fight).  All the Saiyan's can go SS1.  Kakarot figures out how to do SS2 correctly. 

The Buu saga is also impressively similar.  Kakarot is now more powerful than the other Saiyan's, Bardock is getting up in the years.  Raditz married 18. Vegeta married Bulma.  They all have a mess of kids.  Series still focuses on the adults so the tournament plays out somehwat normally but the kids (Trunks, Goten and Turnip)  form up into a 3 man version of the masked fighter.  

Vegeta and Raditz get the buu marks and fight against Kakarot and Bardock.  Kakarot gets trained by the Supreme Kai.  Final battle between tall of them ends up with Kakarot playing most of Gohan's parts and Bardock playing Goku's.  Vegeta and Raditz fuse into Rageta.  But the story line is more or less the same.  Bardock takes out Majin Buu, but this is is retirement fight and he fights smarter not harder to achieve it.  

Dragon Ball Super has Kakarot, with the other Saiyans doing stuff.  Power levels are basically the same with Raditz and Vegeta being on a level thank Kakarot.  It would basically be DBZ with one extra Saiyan.  

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