[1] Majin Buu is a genie-like magical life form awoken by the evil warlock Babidi that terrorized the universe millions of years before the events of Dragon Ball take place.

During the events of Dragon Ball, he is revived by Bibidi's son Babidi in order to continue his father's plan to conquer the entire universe.

[4] Toriyama stated that the fight between Buu and Gotenks was fun to draw because he was able to come up with odd techniques in "the spirit of gag manga".

They have a rubbery body (again, with the exception of Pure Evil Majin Buu) that can regenerate instantly from any wound,[6] separate parts of it from themselves and control them independently,[7] and can even completely restore themselves from vapor.

[8] Buu can also heal damaged beings,[9] and can absorb other organisms by enveloping them with his body or eating them,[10] the latter done by using his signature attack that turns people into food such as candy.

His appearance, magical powers, how he appeared from his ball, longevity, and how he is summoned to Earth by an evil warlock using the life-force of his victims are all somewhat genie-esque, an aspect further implied in the Japanese word "Majin" in his name, which can read as "Djinn", which led to Viz Media rendering his name as Djinn-Boo for the English manga release.

[23] Being the final villain faced by the protagonists in the original Dragon Ball series, and the franchise at the time, Buu is the most powerful of them all, possessing vast superhuman strength, speed and reflexes beyond comprehension.

Buu is also able to instantly recover and regenerate from severe trauma, dismemberment and even combustion at a sub-molecular level, and heal wounds from other people.

He is also capable of detaching a large part of his body for various purposes, like ensnaring his targets like a lasso rope, and making clones of himself.

Buu is also revealed to possess godly ki after absorbing the two Supreme Kai, granting him a tremendous surge in power, retaining it after reverting to his pure state.

[24] In the present day, Bibidi's son Babidi makes it his goal to revive Buu, which the surviving Supreme Kai plans to prevent by killing him.

[26] That is until Goku asks him why he lets Babidi boss him around, leading to Buu killing him, however he continues his mischief and destruction, unaware that what he is doing is wrong.

[27] Majin Buu attacks humans, destroying nearly all of the world's population, then builds a house by converting people into clay.

[29] However, Goku and Vegeta fuse together into Vegito, but, despite being powerful enough to defeat him, they intentionally get absorbed by Buu in order to enter his body.

[30] Buu encounters Beerus during Bulma's birthday party, and quickly provoked the deity into a rampage after he childishly refused to share some pudding dessert.

Alas, also due to the intensity of his training, Buu falls asleep and will not wake for 3 months, forcing him to miss the Tournament of Power.

Shortly after the events of the Tournament of Power and Dragon Ball Super: Broly, Buu is kidnapped by the Galactic Patrol and taken to their headquarters.

The Galactic Patrol reveals that the Grand Supreme Kai locked away the ancient warlock, Moro, before Buu had absorbed him.

While waiting for Buu to wake, Goku and Vegeta travel to New Namek to battle Moro, who is searching for the Dragon Balls, but are unsuccessful and have their power taken from them.

They also fuse together, creating a character referred to as "Majuub" or Super Uub (スーパーウーブ, Sūpā Ūbu), essentially recreating Majin Buu once more.

In the 2005 game Dragon Ball Z: Supersonic Warriors 2, Evil Buu creates a dimensional hole that extends to the afterlife, traveling there and encountering Vegeta and Dabura, who team up against him under the conviction that their combined strength can prevail.

[35] After the fight, Evil Buu commands Dabura take him to find strong opponents,[36] and meets Cell, pledging to smash him.

[42] IGN's David F. Smith states that although he is tough, Majin Buu's pink complexion prevents anybody from taking him as a serious threat.

[4] According to Dennis Amith of J!-ENT, seeing him "kill people for the sake of hunger or for enjoyment to hear things go 'boom'" makes Buu the deadliest villain of the series.