Captain Blue Jr., called Junior, hails from Movieland's Blue Town, named after the legendary superhero Captain Blue. As Blue Town's self-proclaimed protector, Junior eagerly anticipated Captain Blue's return, hoping to inherit the V-Watch and officially become the hero's successor. This expectation shattered when Joe, another admirer, received the V-Watch instead, sparking significant initial jealousy in Junior. Despite this envy, Junior became Joe's sidekick, offering crucial support during adventures with his deep knowledge of Movieland. Captain Blue later gifted Junior an alternative power source: a case containing specialized V-Yo-Yos enabling his transformation, activated by the phrase "Henshin a Yo-Yo Ball Baby!". Junior's abilities focus on agile, yo-yo-based combat, utilizing the V-Yo-Yos for diverse offensive maneuvers. In the anime, a pivotal moment sees Junior perform a Heroic Sacrifice to protect Joe and allies. This selfless act profoundly impacts Joe, strengthening their bond and transforming their dynamic from rivalry into mutual respect and camaraderie. Junior's sacrifice fuels Joe's intensified resolve against their adversaries. Junior evolves from a jealous aspirant into a dedicated ally. His initial envy yields to steadfast loyalty, making him Joe's reliable partner. Their relationship solidifies into a "Badass and Child Duo," showcasing Junior's growth and maturity despite his youth. He stands as the franchise's youngest hero capable of transformation. Junior serves as both a supportive figure and a symbol of youthful heroism. Beyond the anime, Junior appears as a playable character in *Viewtiful Joe: Red Hot Rumble*, which follows the anime's continuity. His gameplay emphasizes his signature yo-yo attacks, reinforcing his established combat style.