A certain pirate's jigoku yoichi

Dr. Vegabank is a genius scientist and inventor, the leader of the Navy's Special Science Class, the user of the Brain-Brain Fruit, and "the man with the best brain in the world."

The dream is to create a world where energy can be shared freely.

Vegabank was born on the mechanical island of Balkimoa. He was a genius from birth. He designed and created a large number of inventions in his youth, leaving behind hundreds of design drawings.

For ordinary people, any one of these drawings is a priceless treasure, and it would be difficult to achieve even in two or three hundred years.

However, due to lack of practical technology and funds, many of his ideas came to naught.

Out of sympathy for the people in the country who were suffering from the severe cold, he designed a "land heating system", but it was interrupted due to lack of technology and funds when it was just beginning to take shape. He cried bitterly because he could not let everyone live a good life.

After leaving his hometown, Bergabank joined and led MADS, an illegal scientific research team funded by Du Field.

The organization is Du Field's charity project, but among the team members, Caesar Courant, Vinsmoke Judge and Quinn are committed to the mass production research of killing weapons, and only Vegabank focuses on research that can promote world peace. He once won the Ibel Peace Prize for inventing the "GP Flower" that blooms in gunpowder.

While Caesar, Judge and Quinn were still arguing about who was the second in command of the team, Vegabank had already gotten the opportunity to meet the Five Elders.

MADS created the first clone, Stussy, based on the prototype of the idle member Bajingom Stussy.

Later, Vegabank and Vinsmoke Judge led a team to discover the "bloodline factor".

The World Government considered the discovery too dangerous, so they arrested Vegabank and bribed the team. Vegabank was able to extract research funds from the government, so he joined the Naval Science Class.

After joining the World Government, Vegabank became the director of the Bank Forbidden Zone Research Institute.

He once extracted the bloodline factor of Kaido who was arrested by the navy to make the first artificial devil fruit (after 20 years of research).

The World Government demanded that the fruit be handed over, but Vegbank believed that the color of this artificial fruit did not match the color of Kaido's Fish-Fish Fruit, Mythical Beast, Blue Dragon form, and refused on the grounds that the fruit was a "failed product", and kept it in the Bank restricted area.

At the same time, he also conducted research on Jin, the remnant of the Lunalia tribe.

The wild bears on the island often destroyed human villages, causing great trouble to the people, and the news was passed on to the navy.

In order to set up a device to repel the bears, Vegabank went with the navy. While investigating the dangerous mountains, the navy noticed a young man named Sen Taomaru who was ruling the mountain like the king of the mountain by knocking down the bears with "sumo wrestling".

As a child, Sen Taomaru was abandoned by the villagers because of his violent behavior.

Attracted by the "strength" of Zhan Taomaru, who was unable to return to the village and was always hungry, Vegabank hired him as his bodyguard.

22 years ago, Bergabank came to the ruins of O'Hara to lay flowers and commemorate Dr. Clover, whom he had met several times.

When he arrived at O'Hara, he was stunned by the huge amount of documents covering the bottom of the lake in the center of the island.

Although Begabank originally wanted to bring these documents back to the Bank restricted area, he gave up when he thought of the threats from his superiors.

To his surprise, they saw the giants who were transferring historical documents, and met Monkey D. Dragon who came to pay tribute to the clover.

After learning the purpose of the giants' transfer of documents through the dragon, Vegabank secretly came to Elbaf and read through all the materials. He recorded all the mysteries of the world interpreted by O'Hara into his mind and began to study them.

Four years ago, Caesar Courant developed the poison gas bomb.

Vegabank could no longer tolerate Caesar's behavior, so he sent the navy to arrest him and expelled him from the science class.

In a rage, Caesar detonated the "Slime", causing the Bank restricted area to become a life restricted area.

Later, the research base at Vegabank was moved to the 8th Naval Scientific Research Institute, which later became Egghead.

After moving to the 8th Institute of Naval Science Class, Bartholomew Big Bear came to Vegabank to treat his daughter Joelle Bonnie at the introduction of Monkey D. Dragon.

Begabank proposed using stem cell transplantation to treat Bonnie's disease, but the time and money spent on the whole process was almost equivalent to creating a cyborg.

After learning that Big Bear is from the Bakanni tribe, Vegabank proposes that if Big Bear agrees to provide blood to create cloned soldiers, then Bonnie's huge surgery fees will be written off.

Big Bear asked Vegabank about his intention of creating clone soldiers, and Vegabank replied that he wanted to use overwhelming scientific power to suppress the evil party and save the weak people.

The two reached a consensus and named the clone soldiers "Pacifists".

One of the Five Elder Stars, Zeigolucia Satan, eavesdropped on their transaction by monitoring Den Den Mushi. He sent the navy to surround the 8th Institute and made demands on Kuma, asking him to become one of the Seven Warlords of the Sea and to become a humanoid weapon of the navy, undergoing a complete transformation of his body, and finally giving up all "thoughts" and "self".

Bergabank was angry about Satan's request, but Satan refuted that Bergabank, as a "military scientist", had no right to refute him.

However, the big bear cried with joy and agreed to Saint Satan's request.

Because the "Jade Scale" operation takes half a year and another year of recuperation after the operation, Saint Satan proposed that Bonnie would be held as a "hostage" by the World Government for half a year until Big Bear completely loses himself and then sets her free.