Ikki Sawamura, known as Ikkiman, possesses extraterrestrial origins unknown to him during his upbringing. An elderly couple raised him on a terrestrial farm, where he lived ordinarily until a romantic partner left him to pursue fame. This event motivated him to achieve greater stardom to win her back, driving his move from rural life to the city.

His innate supernatural abilities, previously uncontrolled and disruptive in his community, erupted when he encountered the professional battle-ball team Blue Planets during a match. Battle-ball merges baseball, martial arts, and dodgeball as a professional sport in his era. His impulsive interruption of their game resulted in recruitment by Earth’s reigning champions, the Blue Planets.

Through the team, he honed his superhuman capabilities within battle-ball competition. Confronting extraterrestrial adversaries like the Halley’s Comet-based Satano Blackies, he discovered his own alien heritage during escalating interstellar matches. These clashes expanded to planetary stakes, compelling him to compete not for personal goals but for Earth’s preservation.

His evolution traces a path from naiveté and uncontrolled power toward accepting his identity and responsibilities, shifting focus from individual recognition to safeguarding his adopted home planet.