Master Roshi in Dragon Ball Movie 3: Mystical Adventure is an elderly martial arts master who lives on a small island known as Kame House. He is bald with a thick white beard and mustache, typically wears dark sunglasses and casual beach attire or a martial arts uniform, and often carries a walking stick. He is the creator of the Kamehameha technique and the founder of the Turtle School of martial arts. In this film, he has already completed the training of his two young students, Goku and Krillin, whom he has taught the fundamentals of ki control and combat. His primary role in the story is as a mentor and motivator: he encourages his students to enter the World Martial Arts Tournament being held in the country of Mifan, believing that testing themselves against other fighters will help them grow further. He does not accompany them to the tournament but remains on his island, confident in their abilities. His personality is a blend of wisdom and eccentricity. He is knowledgeable about martial arts and the wider world, yet he frequently exhibits a lecherous interest in attractive women, which often leads to comedic situations. Despite this flaw, he is fundamentally kind-hearted and deeply committed to the development of his students. He values discipline, hard work, and the pursuit of self-improvement. His motivations in this film are straightforward: he wants Goku and Krillin to succeed and to continue the legacy of the Turtle School. Key relationships include his bonds with Goku and Krillin, whom he treats with a mix of grandfatherly affection and strict training expectations. He also has a casual acquaintance with Bulma, who visits him occasionally. The film does not explore significant personal development for Roshi, as his character remains consistent with his earlier appearances. Notable abilities include the Kamehameha wave, which he can fire with immense power, and a technique that greatly increases his muscle mass and strength, allowing him to perform feats like destroying the moon. He is also highly skilled in hand-to-hand combat despite his age, and he possesses centuries of martial arts experience.