Kid Buu (LOTSG)

"AHAHAHAHAH!"

- Kid Buu's usual vocalization Kid Buu is the pure form of Buu and the most dangerous incarnation.

He is pure chaos, only living to destroy without care for the universe or its inhabitants.

Power
Kid Buu is weaker than Super Buu but stronger than Innocent Buu and was equal to Super Saiyan 3 Goku during Age 774.

He has vast destructive power and caused havoc to the balance of life and death in the universe when awake, giving in the Kais and God of Destruction many issues over the years.

His regenerative ability allowed Buu to withstand attacks that would destroy other beings on his level. He could regenerate repeatedly after blowing himself up and destroying planets as a result.

When faced with an exhausted and badly injured Kaestos 5 Million years ago, Kid Buu survived the encounter but lost an arm for a prolonged period of time.

When facing Kaestos again eons later, Kid Buu once again proved able to challenge the Saiyan-Hybrid, though Kaestos was far weaker than before and was also exhausted from his fight against Super Buu's strongest incarnation. He managed to kill Kaestos partly due to this.

It was noted by several people that Kid Buu had a seemingly limitless energy supply, which combined with his regenerative ability gave him an extraordinary advantage against foes on his level of power and allowed him to gradually outmatch Goku when he became a Super Saiyan 3 as he wasn't running out of steam while Goku was.