Broly was the first Super Saiyan born in more than a thousand years. At birth, he had an unusually high level of strength for a Saiyan. Broly's exceptional gifts marked him as possibly being the Legendary Super Saiyan. King Vegeta feared this and ordered for his execution. His father, Paragus, begged to spare his life. King Vegeta ended the argument by blasting him. As Broly's execution was carried out both he and his father were left to die. While Paragus barely survived the blast, Broly survived the attempted execution only to grow stronger. On that same day, Frieza acted on his own fear of the Super Saiyan legend and attacks Planet Vegeta. Amid the destruction, Broly encased himself and his father in a powerful shield of ki and escaped.As great as Broly's power was, his emotional instability was greater. Fearing Broly's state of mind, Paragus had a scientist create a special control device to keep Broly controlled. Successful in controlling him, Paragus plans to have revenge King Vegeta's son. When Broly encounters Goku, Broly becomes erratic though he is brought under control by Paragus. Eventually, Broly overpowered the control device, and fully manifested his powers. No longer under the device's control, he unleashes on Goku, Vegeta, Gohan, Future Trunks, and Piccolo, and defeats them all until they channeled their energy into Goku, who used the energy for one last powerful blow that seemingly killed Broly. Broly survived and entered a Saiyan Space Pod, coincidently landing on Earth. The crater caused by his landing filled up with water and froze over time as he fell into a deep sleep. During this time, Gohan grew up, Goten was born and Goku was gone. In an adventure to collect the Dragon Balls, Goten, Trunks, and Videl find themselves in the mountain range where Broly crashed. Broly awakes and Goten, Trunks, Videl, and Gohan became victims to his rampage. It was only after spiritual help from Goku that they were able to send Broly straight into the sun. As great as Broly's power was, his emotional instability was greater. Fearing Broli's state of mind, Paragus had a scientist create a special control device to keep Broly controlled. Successful in controlling him, Paragus plans to have revenge King Vegeta's son. When Broly encounters Goku, Broly becomes erratic though he is brought under control by Paragus. Eventually, Broly overpowered the control device, and fully manifested his powers. No longer under the device's control, he unleashes on Goku, Vegeta, Gohan, Future Trunks, and Piccolo, and defeats them all until they channeled their energy into Goku, who used the energy for one last powerful blow that seemingly killed Broly. Broly survived and entered a Saiyan Space Pod, coincidently landing on Earth. The crater caused by his landing filled up with water and froze over time as he fell into a deep sleep. During this time, Gohan grew up, Goten was born and Goku was gone. In an adventure to collect the Dragon Balls, Goten, Trunks, and Videl find themselves in the mountain range where Broly crashed. Broly awakes and Goten, Trunks, Videl, and Gohan became victims to his rampage. It was only after spiritual help from Goku that they were able to send Broly straight into the sun.It is later revealed that a sample of his blood was preserved, which was used to clone Broly in a bioengineering laboratory. With his power, the Broly clone shatters the bio-liquid tank in which he was created. Once in open air, the bio-liquid that drenched the clone became corrosive and devoured cellular matter that was not like itself, turning the clone into a bio-mutant. Bio-Broly goes on a rampage and causes a leak in the bio-liquid containers, spilling the bio-liquid throughout the laboratory and the island on which it was located. Goten and Trunks help others escape from the laboratory and fire ki blasts onto the sea causing a tidal wave to flood the island, solidifying the bio-liquid. However, Bio-Broly reemerged from the sea as a mutated giant only to be solidified by the sea as well. Seeing their opportunity, Goten and Trunks blasted the solidified Bio-Broly into oblivion.