Dragon Ball: What if Son Goku became an evil villain?

"Hey! Dad, do you have a visitor?"

Bulma looked at Vegeta who was wearing a mask.

There was curiosity and vigilance in his expression.

"This is my daughter Bulma. Bulma, this is..."

Dr. Brief was about to introduce Vegeta to his daughter, but found that he didn't know his name yet.

"My name is...Bidar."

Vegeta hesitated and said a fake name.

He knew that Bulma in front of him would meet Vegeta of this time and space in the future. In order not to affect future history, he could not reveal his identity to Bulma.

"Bida?"

Little Bulma repeated softly, with the corners of her mouth slightly raised.

"What a weird name. Your naming skills are as bad as my dad's."

You're no better than your father...

Vegeta suppressed his urge to complain, turned around and said to Dr. Brief, "Your daughter seems very smart, let her help with this research."

"Can you see this?"

Dr. Brief said with some pride: "To tell you the truth, although my daughter is young, she is actually a genius who is even more powerful than me."

"Hehe, Dad, you're exaggerating. It's just a few hundred million."

Little Bulma smiled and rubbed her nose, then looked at Vegeta and said, "Hey, what kind of research did you ask my dad to do?"

"An alien cell..."

"alien?!"

……

In the days that followed, Vegeta often traveled between Earth and Namek.

Sometimes, he would stay in the Western Capital temporarily and provide his own blood cells for Dr. Brief's family's research.

Sometimes, he would return to Namek and keep a close eye on the training of Links and Broly.

Time flies, and in the blink of an eye, a year has passed.

Although things on both Earth and Namek were not completed, they were already on the right track and there was no need for Vegeta to keep watching.

“It’s time to go and see four years from now.”

After confirming that there was no need for him to stay any longer, Vegeta raised the ring and silently counted the time in his mind.

A time and space tunnel then appeared in front of him, surrounded by colorful lights.

Vegeta came to Earth four years later.

Four years have passed, and there have been no major changes in the Western Capital.

Even Bulma's family is like this.

When Vegeta came to Dr. Brief again, this guy seemed to have finished his busy work four years ago and was basking in the sun in his garden.

Feeling that the sunlight was blocked, Dr. Brief opened his eyes and immediately saw Vegeta's mask.

"Ah! Bi Da, you are finally here!"

Dr. Brief sat up straight with a look of surprise.

"How come you suddenly disappeared for four years without a word?"

"I have something... How's the research you asked me to help with going?"

"That, it's already been completed!"

Dr. Brief stood up proudly and led him to the laboratory.

"Are you really done?"

Vegeta was slightly surprised.

He remembered that in another world, Bulma also took a long time to complete the S cell proliferation technology.

For this purpose, he even made a wish to the dragon for some help.

Who would have thought that Dr. Brief, together with a still-child Bulma, could complete the research in just 5 years?

"Humph, don't underestimate me."

Dr. Brief raised the corner of his mouth, but saw Vegeta looking at him with distrust.

He felt a little guilty for a moment and said, "Well, actually biology is not my specialty and Bulma is still young, so our research didn't make any progress until two years ago."

"and after?"

"I found a great helper! I just communicated with that guy once, and he solved the problem that had been bothering me for a long time!"

"Helper? Who is it?"

"A fellow named Dr. Keqin..."

Dr. Hacken?

Vegeta thought the name sounded familiar, but he couldn't remember it for a moment.

However, this guy Brief actually leaked information about his cells to others, which is a big problem!

"Dr. Brief, didn't I tell anyone that I couldn't tell anyone about my affairs?"

"Of course I didn't tell anyone. I just had a discussion with Dr. Keqin about a certain issue. Don't worry, I'm a very reliable person."

You? Reliable?

Vegeta pouted.

I can be considered as Dr. Brief, who has seen several worlds.

But I don’t think there is any connection between him and the word reliable.

However, although Dr. Brief seemed to have done something stupid again this time, at least he did not lie to Vegeta.

Not long after, Vegeta obtained a tube of S cell reagent and the more precious super cell reagent.

Needless to say, the source of S cells is naturally the S cells in Vegeta's body.

As for super cells, they are even harder to come by.

Although Vegeta already has extremely rare super cells in his body.

But ever since the use of super cells caused his body to collapse, most of the super cells in his body have been destroyed.

The super cell progenitor in this tube of reagent was the last bit of it that was found after Vegeta had almost dozens of tubes of blood drawn by Dr. Brief.

"These two things cost me a lot of money to make. If you hadn't given me a spaceship, I would have settled the score with you."

"You did a good job."

Vegeta put away the reagent.

"Dr. Brief, this thing is a little dangerous at this time. Remember not to tell anyone."

"Why? It's just a reagent that makes some cells proliferate. I don't think it's dangerous."

"You will understand later. I'm leaving now..."

Vegeta was about to leave when Dr. Brief suddenly stopped him: "Why don't you stay a few more days? Bulma will be out of school soon. She has been talking about you."

"no need……"

Vegeta pondered for a moment and said, "Dr. Brief, your family may be in danger soon, but don't worry, someone will save you."

"Save us? What kind of danger will we encounter? Bidda?!"

Just as Dr. Brief was about to continue asking questions, he saw Vegeta had disappeared in front of him.

"That guy always comes and goes without a trace. Who is he?"

……

Not long after, Namek.

Two figures were engaged in a fierce battle above the planet.

Just as Vegeta appeared on Namek, he happened to see one of the black-haired, tailed boys being knocked into the sea, causing a huge water column thousands of meters high.

But a moment later, the boy flew out of the water.

Looking at the sky helplessly.

"No, it seems that I am still not as good as you, Brother Links!"

"No, Broly you are scary, you are only a few years old and you have such power!"