From Dragon Ball Encyclopedia
Oob (ウーブ, Ūbu; FUNimation "Uub") is a martial artist.
Due to being the positive reincarnation of the evil Kid Boo, his name is a result of reversing the name Boo.
Oob was the Human reincarnation of Kid Boo.
Dragon Ball Z
Post-Kid Boo Saga
Oob first appeared at the 28th Tenkaichi Tournament at the age of ten. It was revealed by Son Goku that Oob was actually the reincarnated Human form of Kid Boo who was born from the wish made by Goku just before he defeated Kid Boo. He was trained by Goku and a part of the Z Warriors.
Oob actually had good intentions of entering the Tenkaichi Tournament. His plan was merely to attempt to win the prize money of 10,000,000 Zeni in order to feed his poor village. Being the strongest resident of his village, Oob realized that there could be people in the world who were even stronger than him. With this, Oob lost hope, and became even more nervous when taunted by Nok.
After the draw, Oob was set to challenge Goku in the first round, but was nervous and even flinched when Goku took a step toward him. In combat against Goku, he regained his confidence and power after Goku purposely provoked him. Oob's power increased to a point of being able to hurt Goku, although during the fight Goku never became a Super Saiyan. After their match, Goku apologized and offered to train Oob. At first, Oob was worried about the prize money, but Goku said that he would have Mister Satan give Oob the money he needed. They both then headed to Oob's Village to train in the final scene of Dragon Ball Z.
Although the Z Warriors and other tournament participants initially perceived Oob as frail and inexperienced, the more he would fight against Goku in his provoked and angered state, the more he would adapt to Goku's attacks and grow in power. It is heavily implied that by the end of their fight, Uub's power was equivalent to Goku's, who had not only acquired the most powerful (canon) Saiyan transformation before the ten year skip in time, but had spent the following decade training before the tournament. Furthermore, the once-timid boy was capable of producing powerful, invisible waves of Ki that could uplift the arena's stone foundation, and was his signature attack aside from his basic punches and kicks.
Dragon Ball GT
Black Star Dragon Ball Saga
Five years (ten in the FUNimation dub) after the 28th Tenkaichi Tournament, Adult Oob (ウーブ 青年期, Ūbu Seinen-ki) was now a 15-year-old teen (20-year-old adult in the FUNimation dub) and trained with Goku within the Heavenly Realm. The training ended and Goku told Oob that he had finished his training. Oob wished Goku farewell and flew back to his village. Oob's appearance was now different because of the ten years of training. He wore a gi much like the one Goku wore when they first met. He was also much more muscular and toned instead of skinny and malnourished as in Dragon Ball Z.
When the Earth is attacked by the Tuffle parasite known as Baby, all of the Earthlings are controlled by Baby's powers and become his followers. Gohan and Videl, whom are possessed by Baby, confront Pan in order to kill her. She is rescued by Uub, who confronts the two and stops them from harming Pan.
Seeing that Goku, his trainer and friend, has been slain at Baby Vegeta's hands (Goku was teleported out by Kibito Kai, but was presumed killed), Uub faces off against Baby, but Baby easily dominates Uub and pounds him. Now down, Uub can do nothing but watch Baby prepare to finish him off with the same attack he used on Goku: the Revenge Death Ball until he is saved by Majin Buu. Uub then fuses with Majin Boo, resulting in increased power and Buu's signature ability to turn enemies into candy (though Oob does this with his finger, rather than an antenna on his head). He ends up matching Baby Vegeta in power, but is later on turned into chocolate and eaten by Baby Vegeta.
Though he is assumed dead, when Baby Vegeta turned into a Golden Great Ape he was revealed to be alive when he stopped Baby from attacking Goku, via attacking the monster from the inside. Baby spits him out to overcome the pain, but not before Oob bought Goku enough time to gather power from Gohan, Goten, Trunks, and Pan, allowing him to effortlessly defeat Baby Vegeta.
Super 17 Saga
Oob appears during this saga while fighting at the Tenkaichi Tournament under the disguise of Papayaman (パパイヤマン, Papaiyaman; FUNimation "Papaya Man"). Making it to the finals, Oob was prepared to beat Satan and become the new world champion until Majin Boo telepathically forced him to throw the fight so that Satan would still be the world champion and the people's hopes would remain high. Majin Boo refered to Satan as "The World's Hero". Oob pretended to lose to Satan, but unlike Android 18 Oob did not ask for anything in return.
When a rip between Hell and Earth appeared, Oob went into action and began to fight off some of the dead villains, such as Saibamen and Rild, who had returned from Hell. He then fought Super 17 along with Goten, Trunks, Vegeta, and Gohan until he is defeated by the ultimate Android.
Shadow Dragon Saga
In the battle against Omega Shen Long, after Goku (in his Super Saiyan 4 form) was defeated by the Evil Dragon, Oob intervened along with Gohan, Goten, and Trunks. Due to being no match for the superpowered Evil Dragon, Oob was solely able to stall Omega for a little while in order for Goku to be able to reach Super Saiyan 4 once again. Unfortunately, Oob was only able to hold Omega in a Half Nelson for a few seconds until he was blasted in the face and knocked out by the Evil Dragon.
But Oob quickly recovers with the resilience inherited from his fuse, though his ki was greatly weakened by his encounter with Omega. He wakes up just in time to witness Goku and Vegeta perform a Super Saiyan 4 Fusion and form Super Saiyan 4 Gogeta. Impressed by the technique, Oob volunteers to fuse with anyone available (Goten, Trunks or Gohan), but Gohan explains to Oob that it requires several hours of practice and that their power levels must be equal, and Oob was not at his peak, due to Omega Shenron's attack. Oob then watches the battle against Omega Shen Long on the sidelines.
Eventually, Oob is of little help in the climatic showdown, merely helping getting Chichi to safety when the remaining Saiyans decide to avenge Goku. Presumably if Goten, Trunks, Gohan, and Vegeta failed, Oob would've been the only hope left of taking down the final dragon. However, due to Goku's miraculous and very ambiguous survival of the Minus Power Ball, a Universal Spirit Bomb was formed that was powerful enough to keep Goku steady to finish off the last of the Evil Dragons. While Oob did not contribute energy to the attack, he did bear witness to the climax of the battle.
After Goku's departure with Shenron, Oob bids farewell to his friends and returns to his village. It is likely that since Goku is gone, he will continue training extra hard, in order to defend the Earth again, if it is in danger.
Though Uub, the reincarnation of Kid Boo, was the most powerful human in existence, he still seemed to pale in comparison to that of a Super Saiyan. In a sparring match at the beginning of GT, Oob was just barely holding his own against his master and friend Goku, who was in his base form. Though Goku commented that when he fought Rild in his base form his power was comparable to Majin Boo's, meaning that Uub is most likely stronger than a previous Super Saiyan 3. Although, this may be due to his inexperience as a fighter or a lack of discipline in utilizing his power properly.
However after fusing with Majin Buu, his original counterpart, he transformed into Oob and his power level soared to new heights. While he was still outclassed by Vegeta Baby, he was able to put up some resistance against the Tuffle (particularly after he had allowed himself to be eaten by him).
During the Shadow Dragon Saga, Oob offers to fuse with Son Goten, Trunks, or Son Gohan in order to defeat Omega Shen Long. Gohan states that Oob was too injured, and that he would need to rest up to fuse with one of the three Saiyans.
Majoob, know as Super Oob (スーパー ウーブ, Sūpā Ūbu) in Dragon Ball Z: Budokai Tenkaichi 3, was the result of the Fusion between Mister Boo and Oob in Dragon Ball GT, which created a much stronger and more muscular version of Oob who wore Mister Boo's black and yellow vest. He made his debut in "The Return of Uub". Oob retained many of Mister Boo's abilities, including the power to turn organic beings into chocolate (and possibly other kinds of matter if he wished). He apparently could not regenerate, however. He appears several times throughout the series to help ward off some of the most powerful of foes: Baby, Super 17, and [[Omega Shen Long]. The name Oob is not used in the original Japanese dub or Blue Water dub. Oob was much like a good, Human-form of Kid Boo, being roughly similar in height and build.
Oob is considered to be the most powerful Human on Earth since he is the reincarnation of Kid Boo (who bested Super Saiyan 3 Goku without any signs of fatigue). However, upon becoming human, Uub has lost his incredible regeneration and body manipulation abilities that he had possessed as a Majin, and the extreme unpredictability and wild, ruthless nature that made Kid Boo virtually unstoppable.
- Bukujutsu – The ability to fly using one's ki to do so called sky dancing in the anime. Taught to Oob at the beginning of his training. Most Z Warriors and other fighters possess this skill.
- Fusion (permanent) – Oob and Majin Boo's ultimate weapon. When overpowered by Baby, Mister Boo and Oob use this technique and fuse permanently into a stronger version of Uub. After fusing, his power up aura becomes pink.
- Kamehameha – Taught to Oob by Goku and learned by Mr. Buu after witnessing Goku perform it, the combination of Oob's and Majin Boo's Kamehameha make Oob's Kamehameha one of his most powerful attacks (as it is for most fighters in the series).
- Chocolate Kamehameha – A combination of Oob's Chocolate Beam and Kamehameha, hence the title. Oob uses this technique in an attempt to defeat Baby Vegeta, but the Tuffle parasite counters it with his own attack and hits it back at Oob, turning him into a piece of chocolate. However, it has been stated that Uub purposely allowed Baby to deflect the attack
- Super Kamehameha – An upgraded version of the Kamehameha. The hand movements to perform the attack is the same as the Kamehameha, however the charging time takes longer due to more Ki energy being put into it. Seeing as how Goku was the inventor of the upgraded version, it is likely Oob learned it during his training.
- Chocolate Beam – This was once the mighty Majin Boo's signature move, turning anything it hit into whatever the user pleases (usually chocolate, candy, or food). As Oob lacks an antenna (Majin Boo normally fires the beam from antenna) , Oob fires the beam from his fingertip instead.
- Ki Cannon – Oob's primary move before being trained by Goku. Oob blows an invisible wave of ki through his mouth.
- Lightning Arrow – One of Oob's most powerful attacks. He exerts flurries of swift energy waves that inflict a large amount of damage.
- Super Energy Wave Volley – Oob releases a rapid barrage of energy blasts at his opponents, causing a massive accumulation of damage.
- Oob vs. Son Goku
- Oob vs. Son Goku (in Dragon Ball GT)
- Oob vs. Vegeta Baby
- Oob vs. Vegeta Baby
- Oob vs. Mister Satan
- Oob, Vegeta, Son Gohan, Trunks Brief, and Son Goten vs. Super No. 17
- Oob vs. Omega Shen Long
- Japanese: Megumi Urawa (Kid), Atsushi Kisaichi (Teen)
- Blue Water dub: Scott Roberts
- FUNimation dub: Sean Michael Teague
- Brazilian dub: Angelica Santos (DBZ), Rodrigo Andreatto (DBGT)
- Biographically speaking, Oob is very similar to Namu. Both come from a poor Human village, both are the strongest of their people, and both entered the Tenkaichi Tournament with the intention of buying things to sustain their village (water in Namu's case, food in Oob's case) where they fought against and befriended Goku.
- Like Mr. Boo, Oob was also eaten in Dragon Ball GT when his attack was redirected back at him (though unlike Mr. Boo, it is implied that Oob intended for himself to be eaten).
- Goku is carrying Oob on his back in the end of the original manga and in the final episode of the anime adaptation. It should be noted that in the Dragon Ball Kanzenban re-issues, Akira Toriyama has drawn a new ending segment for the manga (including the old one) which features Goku having Oob ride on top of the Kinto Un, which also gives us a better look of student becoming a teacher as it shows Goku as a child on the cloud in resemblance to Oob who is now cheerfully riding it.
- As Vegeta points out in the final episode of Dragon Ball Z, "Goku's Next Journey", Oob is able to learn to fight as he is fighting. Much like Boo was able to learn the Kamehameha and Instant Transmission from Goku just by watching him.
- In Dragon Ball Z: Budokai Tenkaichi 2 and its sequel, Oob wears an orange gi as his alternate outfit. It is similar to the one Goku wears throughout the Dragon Ball series prior to "Granddaughter Pan".
- Oob can be considered the strongest Human in the series.
- Oob is the third person to have a permanent Fusion (willingly) to take full control, Piccolo being the first and Kibito Kai being the second.