Rockman is a humanoid robot originating from a video game world who enters the real world when a game console remains active overnight, enabling Dr. Wily's escape. His primary mission is to locate and stop Dr. Wily to prevent global destruction, forcing him to adapt to an unfamiliar environment.

Physically resembling a grade school child in size, he possesses an arm cannon firing energy projectiles, maintaining fidelity to his original video game appearance. He exhibits a strong commitment to justice and persistent focus on countering Dr. Wily's threats, even displaced. While in Japan, he displays inquisitiveness about human culture, actively learning Japanese customs, traditions, and geography from the assisting Kobayashi family. This cultural education includes understanding festivals like New Year, Setsubun, Hinamatsuri, Children's Day with koinobori, Tanabata, Obon matsuri with mikoshi parades, Tsukimi, and school athletic events.

His problem-solving abilities include deducing Dr. Wily's Mount Fuji hiding place after learning about the volcano. In combat against adversaries like Samurai Man and Lava Man, he utilizes signature techniques such as the Charge Kick maneuver with a football and coordinates with robotic allies Proto Man, Beat, and Rush against multiple enemies. His capacity to copy weapons from defeated foes remains consistent.

Throughout his mission, he maintains cooperative relationships with human companions Yuuta and Akane Kobayashi, accepting their guidance navigating the real world. He participates in human cultural activities like carrying mikoshi and consuming traditional foods such as dango during Tsukimi. After successfully thwarting Dr. Wily's real-world schemes, including defeating specialized robots and preventing Tokyo's destruction, he returns to the video game world alongside other characters.

The documented narrative focuses solely on these events.