In the animated feature Dragon Ball Movie 3: Mystical Adventure, Bulma is portrayed as a young, brilliant, and resourceful teenager whose thirst for excitement and romance drives much of the early action. As the daughter of the wealthy Capsule Corporation president, she has access to extraordinary technology, which she uses to create a Dragon Radar, a device that pinpoints the location of the mystical Dragon Balls. Her primary motivation in this film, consistent with her characterization in the early series, is to gather all seven Dragon Balls to wish for a perfect boyfriend, a goal that reflects her youthful vanity, confidence, and romantic preoccupations. Her personality is lively, strong-willed, and occasionally superficial; she is well aware of her attractiveness and is not afraid to use her charm to get what she wants, yet she also possesses a sharp tongue and can act rashly when frightened or frustrated.

In this particular movie, which blends elements from the Red Ribbon Army and general training arcs into a unique parallel story, Bulma serves as a key member of the adventuring group alongside Goku, Krillin, Oolong, and Yamcha. Her role is that of the brains of the operation, using her inventions to locate the Dragon Balls even as the corrupt Mifan Emperor's minister, Master Shen, and his brother, General Tao, scheme to seize them for world domination. Unlike the powerful fighters she travels with, Bulma possesses no superhuman strength and typically avoids direct combat, preferring to rely on her intellect and technology. Her relationship with the desert bandit Yamcha is a notable subtext; in this film as in the main series, there is a budding romantic tension between them, and Yamcha acts as her protector during dangerous moments, such as when they escape from the palace ambush by jumping into a moat.

Throughout the narrative, Bulma demonstrates remarkable courage and adaptability. When she and her friends are captured or cornered by Master Shen's forces, she does not simply wait to be rescued but actively looks for a way to escape, even when forced to abandon the Dragon Balls they had collected. Her key development in this story is a reinforcement of her resilience and her shift from purely selfish desires to a more team-oriented mindset, as she continues the dangerous quest not just for a wish, but to prevent the villains from misusing the Dragon Balls power. Her notable abilities are all technological: she is a genius inventor who can construct and operate advanced radar systems, flying vehicles, and the Hoi-Poi Capsules that store them, making her an indispensable asset to her friends despite her lack of fighting prowess.