Captain Blue Junior, nicknamed Junior, is a young, self-proclaimed hero hailing from Blue Town—a community named in honor of his idol, Captain Blue. As the town’s eager guardian, he long anticipated Captain Blue’s return to bestow upon him a V-Watch, a transformative superhero device. When Joe instead became Captain Blue’s chosen successor, Junior grappled with envy but ultimately embraced a role as Joe’s ally, leveraging his expertise in Movieland to support their missions. Though Captain Blue later offered him a V-Watch, Junior declined, accepting instead a case containing twin V-Yo-Yos that unlocked his transformation powers. His flamboyant activation catchphrases, “Henshin a Yo-Yo Ball Baby!” or “Henshin a Yo-Yo Baby!”, precede combat dominated by yo-yo techniques, showcased in *Viewtiful Joe: Red Hot Rumble* through dynamic, yo-yo-driven attacks. During the Gedow anime arc, Junior’s journey shifts from jealous rival to steadfast ally. His defining moment arrives when he risks his life to shield others, igniting Joe’s fury against their foes and cementing Junior’s growth into a selfless hero. A fiercely loyal defender of Captain Blue’s legacy, Junior rebuffs critiques of Blue’s physique with the retort, “He’s husky, not fat!”—a testament to his unwavering admiration, even as Blue’s reputation falters. As the franchise’s youngest transformable hero, Junior personifies the clash of youthful ambition with mentorship and rivalry. His relationship with Joe oscillates between camaraderie and friction, balancing Joe’s impulsiveness with Junior’s tactical insight. Beginning as adversaries, their bond gradually solidifies into a partnership where Junior’s ingenuity and distinctive skills synergize with Joe’s raw power, a dynamic consistent across game and anime portrayals.