Captain Blue Jr., known as Junior, hails from the Viewtiful Joe anime series. He lives in Blue Town, named for the superhero Captain Blue, his idol. Yearning to become Blue's official successor and receive a V-Watch, Junior serves as Blue Town's self-proclaimed protector until Joe unexpectedly gains the device. Though initially jealous, Junior becomes Joe's sidekick, leveraging his Movieland knowledge. Captain Blue later gifts Junior a case containing two V-Yo-Yos, enabling transformation via the phrase "Henshin-a-Yo-Yo, Baby!". Junior's journey sees significant development. Early episodes feature him aiding Joe against the Jadow organization, confronting gunfighter Bianco Billy in Blue Town and repelling Charles III's aerial assault using Captain Blue's Machine Six aircraft. His loyalty shines against threats like mind-controlling Slugoon creatures and fiery Jadow agent Fire Leo. However, feelings of inadequacy surface in Episode 38, causing him to temporarily leave Joe. He overcomes this self-doubt, returning to support Joe against the alien Gedow organization in the second season. A pivotal sacrifice occurs during the battle with Gedow leader, the Black Emperor. Junior intercepts an attack meant for Joe and Silvia. This act catalyzes Joe's transformation into a more powerful state, leading to the Black Emperor's defeat. Junior's sacrifice transports him to a celestial realm resembling a film set, where he continues to watch over Joe and Silvia. He also appears as a playable fighter in the non-canonical game *Viewtiful Joe: Red Hot Rumble*, wielding his V-Yo-Yos. Junior's dynamic relationship with Joe evolves from rivalry to trusted partnership. His earnest personality often provides comic relief, yet he demonstrates maturity in critical moments, mentoring Joe on responsibility and heroism. His dedication to protecting others, evolving from aspiring hero to selfless guardian, defines his narrative arc.