Dragon Ball Z: The World’s Strongest

Goku arrives at Wheelo's lab to rescue Bulma and the others and quickly demonstrates his overwhelming power. He battles the bio-warriors using Kaio-ken and helps unleash the Spirit Bomb against Wheelo. His courage and relentless fighting drive the mission to save Earth.

Gohan plays a crucial role when Wheelo brainwashes Piccolo; his anger ultimately shatters the device, breaking the brainwashing hold. He fights alongside his father and friends, using his latent power in the crisis. Gohan's resolve highlights inherited strength and responsibility.

Piccolo is brainwashed by Wheelo and attacks Goku until Gohan's rage frees him. He battles with energy blasts and struggles under the brainwashing until he is released. His alliance with Goku is crucial to stopping Wheelo.

Bulma is kidnapped by Dr. Kochin to coerce Master Roshi into pursuing them, a ploy that pushes the heroes toward Wheelo's lab. She deduces Wheelo's plan and informs Goku that the mastermind seeks to inhabit a powerful body. Her quick thinking helps the team respond to the threat.

Roshi defeats the bio-warriors but is forced to chase the villains to Wheelo's lab, showing his stubborn determination. He provides guidance and support to the younger fighters while facing overwhelming odds. His experience anchors the team during the escalation.

Dr. Kochin is the scientist who gathers the Dragon Balls and unleashes the bio-men to confront Earth’s defenders. He is ultimately knocked aside in the clash and dies when Wheelo breaks free from the ice. His schemes set the events into motion.

Dr. Uiro works alongside Kochin in Wheelo's scheme, aiding the creation of the bio-warriors. His role underscores the collaborative but dangerous nature of the scientists’ pursuit of power. He appears primarily as part of the rogue project that threatens Earth.

Dr. Wheelo is a brain in a lab who seeks to inhabit the strongest body on Earth to achieve dominance. He orchestrates the rescue mission, brainwashing Piccolo and clashing with the heroes in a final showdown. His plan collapses when Gohan's power disrupts his brainwashing device.

Misokattsun (Umigame) is one of Kochin's bio-warrior henchmen, engaging Goku in battle. Their abilities challenge the Earth defenders and test their ability to adapt to unconventional foes. He falls to Goku's power in the ice-laden confrontation.

Kishime is a brutal bio-warrior who presses Goku and Gohan in the lab. He represents the ruthless efficiency of Wheelo's plan. The fight against Kishime highlights the escalating stakes of the mission.

Ebifuryâ is another bio-warrior whose ice-based attacks confront the heroes. He adds to the danger posed by Wheelo's biomechanical army until Goku overcomes him. His presence emphasizes the cold, calculated threat facing Earth.

Shenron, the eternal dragon summoned by the Dragon Balls, appears to grant Wheelo's wishes before Earth’s defenders intervene. The dragon's presence underscores the stakes of gathering the Dragon Balls. The heroes ultimately rely on their strength to end the threat.