TV-Series
Description
Oolong is an anthropomorphic pig who first appears in the original Dragon Ball story and carries a smaller role into Dragon Ball Z. He is a shape-shifter, able to transform his body into other forms, though his transformations last only about five minutes and cannot be maintained beyond that limit, a restriction that creates recurring comic situations. He is an animal-type Earthling, meaning he belongs to the world's population of talking animal people rather than being an alien or magical being.

In terms of background, Oolong originally used his transformation ability deceptively. He posed as a horrifying monster to terrify villagers and extort them, demanding food and young women from the community he preyed upon. This scheme brought him into conflict with the young Goku and Bulma during their search for the Dragon Balls, and when his deception was exposed, he was forced to abandon his scam. During that journey he also demonstrated his self-serving nature at its most absurd: when the opportunity arose to make a wish with the Dragon Balls, he used the wish on a pair of women's underwear instead of anything noble. Despite this, Oolong proved not to be truly malicious, and over time he settled into the role of a reluctant ally. After the adventure he began living at Capsule Corporation in West City, the home of Bulma's family.

In personality, Oolong is cowardly, lazy, opportunistic, and mostly concerned with his own comfort. He is strongly motivated by food, wishes to avoid danger at all costs, and has a tendency toward lecherous behavior. He frequently provides comic relief because his self-preservation instincts clash with the serious situations around him, and he often complains about the dangers the heroes face while doing whatever he can to survive them. He is not a heroic fighter and has no real combat ability, preferring deception, escape, and clever excuses over direct confrontation.

Within Dragon Ball Z specifically, Oolong's role is small but memorable. He appears in supporting moments during the Saiyan arc, such as attending the funeral held for Goku after the battle with Raditz and taking part in the gathering of the Dragon Balls to revive fallen friends. When the Saiyans arrive, he hides with the other non-combatants rather than facing the battle. His appearances in the series function as continuity from the earlier story and as comic relief, showing how ordinary and unremarkable members of the Dragon Ball world react to threats that grow ever more powerful.

His key relationships include Goku, whose strength he respects but whose naive trust in others often frustrates him; Bulma, whose sharp temper and intelligence intimidate him; and Puar, a fellow animal character and shape-shifter who is far more disciplined and reliable than he is. Living at Capsule Corporation, he remains loosely connected to Bulma's household and the wider group of characters even though he no longer takes part in adventures.

Oolong's development across the franchise is limited but recognizable. Over time he shifts from a small-time con artist who abuses his powers for personal gain into a mostly harmless, occasionally helpful presence who stands by the heroes when it matters. Though his bravery rarely lasts long, he has shown moments of cooperation and even usefulness in a crisis. His notable abilities are almost entirely tied to his transformation power, which he uses for both mischief and, occasionally, practical purposes, but he also possesses a quick tongue and a strong survival instinct that have kept him safe in a world filled with far more powerful beings.