Despite his hesitation, Vegeta ultimately chose to undergo the transformation. This was his only chance to surpass Goku, even if only temporarily. Despite his age being a factor and knowing that Goku would quickly catch up, Vegeta was determined to experience that moment of triumph.
"It seems you've made up your mind. It just so happens that your son and daughter are here, so I'll make sure they're safe from you. As for you, let's see how this goes!"
Without further ado, Vegeta decided to go through with it. He informed the others of his plan and then began to form a sphere of energy in his hand. This sphere was a Power Ball, a technique used to mimic the moon's light and trigger the transformation into a Great Ape.
Vegeta had used this technique when he first arrived on Earth, transforming into a giant ape, while Goku, lacking a tail, couldn't transform.
After launching the Power Ball, Vegeta looked up at it, triggering the transformation. His body began to grow and expand rapidly. Remarkably, in the Super Saiyan 4 transformation, even the clothing transformed along with the body, which is a peculiar phenomenon.
As Vegeta transformed, Asahi couldn't help but find it amusing. The transformation into the Great Ape, particularly the Golden Great Ape, had always struck him as peculiar. The animators of Dragon Ball GT had created a somewhat bizarre rendition of the ape, with an unusually round belly, which looked out of place.
Despite these quirks, Vegeta completed his transformation into the Golden Great Ape. However, unlike his previous transformations, he lost control of his mind. This was a significant drawback.
No matter how powerful Vegeta was, he couldn't retain his sanity in this form. This was different from Baby, who had exploited this transformation to his advantage by taking over Vegeta's body, allowing him to control the ape form without losing reason.
Now, Vegeta was rampaging, completely out of control.
"This is what Dad always talked about, the Saiyan ape transformation? It's really terrifying!"
Seeing Vegeta started wreaking havoc, everyone at the moment was also taken aback. The younger generation, except for Gohan, had never witnessed the Great Ape transformation, so this was a shocking sight for them.
"The Great Ape transformation was always black in the past, but now it's golden. And Vegeta, who as a royal Saiyan, never lost his sanity before, is now completely berserk!"
Goku looked at the raging Great Ape and spoke. He had previously fought against it and nearly lost his life.
"I didn't believe my dad when he said we were royalty, but it turns out he was telling the truth!"
Trunks's sister, Bulla, was puzzled. He always thought her father was joking when he's talking about being a prince.
"That's right. If the planet of the Saiyans hadn't been destroyed, you two would indeed be a prince and a princess!"
Asahi nodded, then transported the two in front of Vegeta. Seeing them, the rampaging Vegeta stopped his attacks and just stared at them.
Afterwards, his body began to shrink continuously. The current Vegeta was different from before; he had developed a sense of humanity and was good to his family. His battle with Beerus showed that he was not the same as before.
And Vegeta of GT Universe is also very emotional, and soon under the influence of his two children, he quickly reverted to his original form, transforming into Super Saiyan 4. However, seeing Vegeta as Super Saiyan 4, Asahi still found it amusing.
Why? Because Vegeta wasn't tall to begin with. Though he grew a bit taller after transforming, it wasn't by much. So honestly, Vegeta's situation was somewhat pitiable, with a height disadvantage.
It is estimated that after Goku successfully transformed, Vegeta might not have been able to take it. Of course, now that he had become Super Saiyan 4, he has surpassed Goku. He would probably be laughing in his sleep for the rest of the month.
"So strong, no wonder it's Super Saiyan 4, with a power eight thousand times that of normal. I feel like I could destroy the Earth with just a wave of my hand now!"
Vegeta felt his power swell and was a bit overconfident. But with such a surge in power, destroying ten planets is indeed as simple as he said.
After all, Super Saiyan 4's combat power was on par with Super Saiyan Blue. So now, Vegeta's combat power was equivalent to that of Super Saiyan Blue.
This wasn't an anime, so naturally, self-destructing wouldn't just destroy a city.
"Kakarot, did you see that? I've surpassed you now!"
Vegeta suddenly remembered something and started boasting. Though it was a bit childish, Gohan and Trunks understood Vegeta's personality and didn't say much.
"Dende, can you remove the seal on my tail?"
Goku asked Dende with a smile, knowing that since it was Kami who sealed his tail, Dende should be able to undo it.
Regarding this, Dende didn't say much and just nodded. Goku and Vegeta growing stronger was beneficial for Earth, and they also could help Namek if it ever faced danger.
Goku was already a great benefactor to Namek, so there wasn't much more to say.
However, the seal was just opened, and it would take a long time for Goku's tail to grow back.
During this period of time, Vegeta was happy. After all, it would be a while for him to surpass Goku.
However, once the seal was lifted, Goku also couldn't wait to challenge Vegeta. Vegeta was naturally very happy, as fighting Goku was the best outcome.