Oolong is an anthropomorphic pig, who met Bulma and Goku while on their quest finding the Dragon Balls. After their adventure, he begins living at Capsule Corporation in West City. He plays a large role in the beginning of Dragon Ball, but by the end of Dragon Ball Z, he just shows up from time to time in the company of Master Roshi. Oolong is the one who made the wish which created Oceanus Shenron.
Oolong lived in Octagon Village, a village filled with other talking perverted pigs like himself. He was expelled from the kindergarten there for kidnapping a teacher. He later attended the Shape-shifting Academy where he always bullied Puar around for lunch money but was eventually expelled for stealing the teacher's panties (papers in the dub). He was able to get a nice mansion next to Aru Village by ripping off lots of people.
Adventures with Bulma and GokuEdit
Oolong became known as a demon by the residents of Aru Village, since he kidnapped their young women to take care of his house. Unfortunately for him, the young women were quite comfortable being stolen and living in wealth. While trying to claim Pochawompa as his next girl (which he actually planned to be the one he marries), he was stopped by Goku who defeated him and made him release the girls he previously kidnapped.
Bulma decided that he might be useful on her Dragon Ball quest and persuaded him to join their expedition. While heading out with them, Oolong disagreed with the whole idea of going. When he found out that they were heading to Fire Mountain, Oolong tried to ditch them by transforming into a fish, but he failed when getting captured again. Bulma gave him a PP Candy that causes him to have to go to the bathroom anytime someone whistles "Piggy!" which Bulma used to make him obey her and not try to leave. Since Bulma lost her Capsule case in a river, the gang was forced to walk the Diablo Desert where Oolong met up with Puar, a former classmate of which he bullied teamed up with a desert bandit named Yamcha.
After Yamcha and Puar fled their fight against Goku, Oolong provided the gang with his House-Wagon for the night. That night Oolong learned from Goku about their quest for the Dragon Balls and that they have the power to grant any wish. After giving Goku and Bulma juice that put them to sleep, he was planning to steal the Dragon Balls and take advantage of Bulma during the night but it was cut short when Puar disguised as Goku went upstairs to Oolong. Not wanting Goku to snitch at Bulma that he was upstairs while she was sleeping, He took the form of Bulma and was led outside by the false Goku. After Oolong's five minutes were up, he transformed back to his original form causing Puar to transform in shock that the real Bulma is still in the House-Wagon with Yamcha. The next morning Oolong begins to drive the House-Wagon towards Fire Mountain but was shot down by Yamcha. Oolong was given a new car by Yamcha after Goku defeated him.
Two days later, Oolong and the rest of the gang arrived at Fire Mountain. While not wanting to go near the mountain due to the risk of possibly encountering the Ox-King, Bulma still forced him to go. Oolong and Bulma ended up meeting the Ox-King while Goku was away trying to get in the castle. Oolong wet his pants while he appeared and was going to be killed but then found out that they were friends with Grandpa Gohan's grandson Goku and sparred them. Oolong waited at Fire Mountain with Bulma and the Ox-King so Goku and the Ox-King's daughter Chi-Chi can retrieve his former teacher Master Roshi to help put out the Flames on his castle. Master Roshi put the flames out but for the price of allowing him to touch Bulma's breasts which Bulma forced Oolong to transform into her so Roshi can touch them. Oolong took it to far by completely exposing Bulma's breasts and allowing Roshi to put his face between them, which made Bulma angry despite it not really being her.
While heading to the next location of a Dragon Ball, they stop at Monster Carrot's Village to refill on gas but Goku ends up messing with the Rabbit Mob causing their leader Monster Carrot to turn Bulma into a Carrot, but Oolong drove away and avoided the conflict until it was over. Five of the Dragon Balls that they gained on their quest were stolen by Shu when heading towards Pilaf's Castle. The gang was forced to team up with Yamcha and Puar who were following them from a distance for some time. When arriving at Pilaf's Castle, Goku's four star ball was stolen by having everyone trapped in a room and put to sleep with gas. Oolong and Puar were able to fly out of a hole made by Goku's Kamehameha so they can prevent Emperor Pilaf's plan to wish himself world domination.
Oolong ends up preventing the wish by quickly jumping in and telling Shenron that he wants a girl's pair of panties (in the English Dub, he wished for "Comfort in a pair of underware"). After the wish, Emperor Pilaf becomes angry and has Oolong and the others put into a cell that will fry them by morning. Oolong and the others were able to escape when Goku transforms into a Great Ape from looking at the Full Moon. Oolong helped Yamcha and Puar cut off Goku's tail after the destruction of Pilaf's Castle to revert him to his normal state. Once Goku wakes up, Oolong gave Goku his pants since Goku's clothes were torn off in his transformation. While saying goodbye to Goku, Oolong went with Bulma, Yamcha and Puar to West City.
Attending the 21st World Martial Arts TournamentEdit
On the way to West City, the plane Oolong was riding with the rest of the gang crashed, making everybody walk the rest of the way. When back at West City, he stayed with Bulma, and Puar to watch Yamcha train and even kept Bulma company when he left to train in the wild for the upcoming tournament. He attended the 21st World Martial Arts Tournament with his friends where he met back up with Goku and met Krillin. Since non competitors were not allowed to watch the Elimination Rounds, Bulma forced Oolong to let her use him as a stool so she can watch Yamcha fight. In the main tournament, he is seen in the crowd with Bulma and Puar cheering on Goku, Krillin, and Yamcha in their fights.
Red Ribbon conflictEdit
Oolong is briefly seen in the Red Ribbon Army Saga. He is first seen heading with Yamcha and Puar for Dream Land, a newly built amusement park in town. When they meet Goku, Oolong and Puar were telling Yamcha about how bad Bulma is for him. Bulma pops out of Goku's shirt and yells at Yamcha for talking behind her back. At Dream Land, he and the group meet Hasky, who is disguised as a fortune teller.
Later, Oolong is seen at Kame House, and then at the Red Ribbon Army Headquarters as he and everybody else from the Dragon Ball Gang wanted to help Goku fight the Red Ribbon Army.
Oolong appears at the 22nd World Tournament as a spectator to cheer on his friends. At the Tournament they learn of Master Roshi rival Master Shen and his two students Tien Shinhan and Chiaotzu. Tien is set on beating Goku in the Tournament to avenge Master Shen's brother, Mercenary Tao. After the tournament, Tien and Chiaotzu became friends with the others. Later they find that Krillin is found murdered by a monstrous killer.
King Piccolo's reincarnationEdit
Three years later, Oolong also is the only one to have deduced the true identity of the mysterious female fighter that Goku had to face in the preliminaries (even stating "See, I told you so" while every one of Goku's friends was shocked to learn her true identity).
At the end of the Piccolo Jr. Saga in the anime only (in episode "Dress in Flames"), Chi-Chi and Fortuneteller Baba end up in a village occupied by Oolong-esque pig people. Jasmine and Oonaan claim to know Oolong and think he is a big pervert, but their attempts to spy on Chi-Chi and Baba in the village's hot spring show that they are not any less perverted than he is.
Dragon Ball ZEdit
Oolong's character dwindles to little importance, although in the anime and several movies, he appears quite often as a comic relief character. In Dragon Ball Z: The World's Strongest, soon after discovering the Dragon Balls have all gathered in one place, Oolong steals Bulma's Dragon Radar, and lures Gohan with him to the Tsumisumbri Mountains to verify their discovery and hopefully wish for another pair of panties.
Oolong went camping with the others in Dragon Ball Z: The Tree of Might and Dragon Ball Z: Cooler's Revenge, and went with Gohan and Icarus when Gohan attacked Lord Slug's soldiers in Dragon Ball Z: Lord Slug.
Battle against the SaiyansEdit
Five years later, he asks Shenron if he can kill the Saiyans instead of reviving Goku, but Shenron says he can't do that. At Kame House, he watches the battle against the Saiyans from television, and later with Fortuneteller Baba's Crystal Ball. In a rare moment of compassion, he cries out when Puar faints, their rivalry long forgotten.
Journey to Namek and the space tyrant FriezaEdit
Oolong, along with Puar and Dr. Brief, watch Goku in the Capsule Corporation Capsule Corp. spaceship head to Namek to help his firends collect the Namekian Dragon Balls to revive their fallen friends. They become concerned for Goku when his ship malfunctions in a storm, but cheer when Goku is ok.
Later, Oolong, Puar, Master Roshi, Yajirobe and Chi-Chi try to go to Namek with Dr. Brief's ship, but to Oolong's delight, their ship breaks down before takeoff.
Black Water MistEdit
Some months later, Oolong is at Kame House for a party with everyone but is infected by Garlic Jr.'s Black Water Mist. However, he is later cured along with everyone on Earth by the Sacred Water.
The mysterious youthEdit
A year has passed since the defeat of Frieza. Oolong is at the Capsule Corporation when Vegeta returns to Earth. Later, everybody senses that Frieza is alive and headed to Earth.
The Androids and CellEdit
Three years later, Oolong stays at the Kame House with the others, waiting from news of their friends. When the others bring a sick Goku to Kame House to hide from the androids, he watches on TV as a monster named Cell attacks people in Gingertown. Later, Kame House is flooded with water due to the final transformation on Cell. He then, along with Master Roshi, attended Capsule Corps. to locate where Cell's going to broadcast his Cell Games. They accidentially found Cell while Roshi and he were watching a female exercise channel, with Cell rising through the floor.
Future Oolong is one of the few characters to survive in the "Trunks Timeline," as seen in special. He is hidden in a submarine with Future Puar, Future Master Roshi and Future Turtle.
Death and revivalEdit
Seven years later, Goku is allowed to come back to earth for one day. Oolong is at the 25th World Martial Arts Tournament supporting his friends and later goes with Bulma and the others look for the Dragon Balls. Oolong must later take refuge from Majin Buu on Kami's lookout. A day later, he is turned into chocolate and eaten by Super Buu. Later during the battle between Goku and Kid Buu his life is later restored with everyone else on the planet by a wish by Porunga and later gives his powers to Goku's Spirit Bomb to defeat Kid Buu. He later appears at Bulma's house for a party. Ten years later at the end of the series, Oolong is at the 28th World Martial Arts Tournament, once again supporting his friends.
Dragon Ball GTEdit
Unlike many of the characters, he does not age that much. However, he does age a little in Dragon Ball GT. Years later, In the Baby Saga, when the Earth is about to explode, he moves with everyone else to the new Tuffle Planet, and later reappears at the Capsule Corporation in a party. Oolong's wish for panties leads to the creation of Oceanus Shenron (which, due to the nature of the wish, ironically creates the same kind of Shadow Dragon as most of her brothers). Oolong is last seen in the final flashbacks in the final episode of the Dragon Ball anime.