What if Bardock became a SJ when fighting Freeza? - Son Goku

Bardock , as seeing freeza charge up his deathball, would go into a fit of rage, and charge the ball and punch it. Somehow, the ball uses all of its energies to empower Bardock. He shouts, and lets his rage turn him into a Super Saiyan. He then kicks the crap out of freeza and destroys all of his men.

He then Lets Prince Vegeta take up his rightful place as king. He then secludes himself on earth to watch over Kakarot under gohan's care, as he trains vigorously.

During the Saiyan saga, the Saiyans still come normally (as Bardock had neglected to kill Cold and Coola) Bardock would save Kakarot from Raditz  easily and force them both and Piccolo to train under him. Both his sons become SSJ's before the Saiyans come.They easily Slaughter Nappa, but Bardock takes Vegeta prisoner for questioning. He then forced Vegeta to come with them and watch as they Slaughter Cold and Coola. They go to some random planet. Coola proves to be slightly stronger than Raditz and kills him,  however Goku is beating the Crap out of Cold. Enraged by his son's death,  Bardock shows his new ability, SSJ2  and destroys Coola  and Cold  with a single  blast.. They take back pieces of them back as trophies.

Cell is made, and he is even more powerful, however, he gets his butt handed to him by Bardock SSJ3.

Buu comes and proves to be hard, but even Super Buu with ultimate Gohan is no match for SSJ4 Bardock.  Bardock then guards Kami's lookout and slays pilaf, there by ending DBGT