Incomplete Ultimate Saiyan
Buu looked around the white void that surrounded him.
"Useless struggle," Buu said.
Yamcha was beaten up as he lay on the ground unconsciously.
Buu didn't absorb him or kill him since he kind of felt pity for the guy.
"Now to escape this hell hole." Buu thought as he tried to sense Goten's ki to see if he could sense the boy.
Despite the space in the time chamber being boundless he was able to sense Goten's ki which was in a separate boundless universe.
That is something that even Goku would struggle with and Buu was able to accomplish it easily.
If he remembered what the ki of supreme kai is like he would have already milled him by tracking him down. The only reason why Shin is still alive is because Buu doesn't remember his ki and only knows his face.
"You are dead," Buu said as he teleported back to Earth.
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Back on the lookout.
"Are you the Supreme Kai?" Goten asked Shin who was now fused with Kibito.
"Call me Kibito Kai." He replied.
"Can you give me your earrings?"Goten asked Shin.
"Huh? Sure. But why?" Kibito Kai replied as he took off his earrings.
Goten wanted to use Potara to Fuse instead of the fusion dance since Poatara is faster and easier.
Goten put on one of them. As he was going to throw it to Trunks Buu reappeared.
"Already." Trunks said as he transformed into a Super Saiyan 2 to fight Buu.
"Trunks. Catch this." Goten said as he threw the earring to Trunks.
However, Buu intercepted it and he grabbed it before Trunks could.
"I don't know what this thing is but I am not going to let you guys do what you want," Buu said as he crushed the Potara in his hand.
As Buu was about to make his move Bra attacked him by throwing an energy project at him.
"Who are you, little girl?" Buu asked.
He didn't absorb Vegeta and Gohan is not very familiar with Bra so unlike Goten and Trunks, she is practically a stranger to him.
He could find out her identity if he goes through 18's memories but he didn't as he didn't expect 18 to know her.
Bra throws a punch at Buu but Buu is not impressed.
The new power that she received called Ultimate is supposed to give her around *500 multiplier to her base power level.
For comparison, Super Saiyan has a *50 multiplier, Super Saiyan 2 has *100, and Super Saiyan 3 has a *400 multiplier.
But there was a problem.
Normally she can use Ikari which kicks in normally during battles. Which gives her *10 multipliers to her base form whenever she activates it.
However, because Ikari is an unstable form that she has not fully mastered, it hinders her Ultimate from power which is supposed to draw out her full potential.
Because of that, she was only able to use 50% of her ultimate form power. Compared to its full abilities.
This means she could only get a *250 times boost to her base power instead of the full *500.
This is the reason why old Kai said that Marron had more potential than Bra when they were in the world of Kai because he saw the roadblock that Bra had to face.
Her base power is not that high so her power is still inferior to that of Super Saiyan 2 Goten.
However, at that time, Buu is not impressed.
He has seen one person after another that have a huge amount of power but in the end, they all fall short.
Either because they were unlucky and got outsmarted by Buu, Buu outlived their strongest attacks or because their power was not able to match up to Buu.
Buu grabbed her by the leg and punched the three-year-old in the stomach.
Buu was stronger than Super Saiyan 3 Goku before he absorbed 18, Piccolo and the others.
Meaning Bra is punching above her weight by going up against him.
"Divine King Cannon." Kibito Kai said as he launched a beam that is made using a special type of ki called God Ki at Buu.
Buu was holding Bra by the neck at that time and he tried to block Kibito Kai's attack by using an android barrier.
However, the Barrier ability that he got from 17 was designed to protect against regular ki attacks.
God ki although similar is different from regular ki just enough that it pierces the Barrier as it hits Buu's body.
It was weaker than both Goten's Galick Gun and Goku's Super Kamehameha but it was able to pierce just by being a bit different.
Buu can still regenerate but Bra was able to break free while he was regenerating.
She gathered ki in her hands and landed a powerful blow on his face.
"You annoying....." Buu yelled out in anger.
The reason why Majin Buu was threatening when he absorbed Gohan was because he was able to use Gohan's intelligence along with his technique.
He then absorbs more and more warriors as he starts to struggle against the people who are trying to kill him.
This mainly comes from Gohan's desire to be strong enough to protect everyone whom he cares about.
However, the more people he absorbs the stronger he gets but also the dumber he becomes.
He begins to rely more and more on a few techniques like instant transmission and Barrier despite having techniques like solar flare, clone, and destructo disc at his disposal.
This isn't the worst scenario when the technique you rely on is working but will make you a less efficient fighter when it starts to fall apart.
"You bastards you will pay for it." He said as he kicked Bra away and dashed towards Kibito Kai.
However, Bra launched an energy beam at his back as he went after Kibito Kai.
"Photon Buster." She yelled out as her pink energy beam hit Buu in the back.
He launched an air fist at her knocking her down to the ground.
He then prepared to finish her off with a Kamehameha but before he could, his movements were restrained by Kibito Kai who was using telekinesis.
He quickly breaks free and tries to grab Kibito Kai's neck by scratching his hand at him.
Despite how much dumber he becomes Bra and Kibito Kai are unable to finish him off as his power is too much for them.
But their goal was not to kill him.
But to stall him just enough for Goten to fuse with Trunks.
"Fusion Ha." Goten and Trunks said as he performed a fusion dance perfectly as the two merged into Gotenks.
Buu noticed that something was wrong when he sensed Gotenks's very high base power level.