Gen is a supporting character from the 1970s anime series Groizer X. Information about Gen is limited, but he serves as a valuable asset to the Tobijima Pilot Team based on Akane Island. His primary role is that of an intelligence gatherer, as he operates a submarine for the team. This work involves patrolling the waters around the island and collecting crucial information on the activities of the Gaira Empire, the alien force that serves as the primary antagonists of the series.

Despite being a normal human without any special powers or alien technology, Gen demonstrates considerable bravery and competence in his role. His status as a submarine driver requires specialized skills, and his successful intelligence work contributes directly to the team's ability to counter the Gaira threat. He is one of a small, trusted group that includes the main protagonist Joe Kaisaka and the team's leader, Professor Hideki Tobishima, who are aware of the secret location of the giant robot Groizer X, marking him as a reliable confidant within the organization.

His personality is not extensively detailed, but his actions as a secret-keeper and his line of work imply a trustworthy and dependable nature. Gen does not pilot the giant robot Groizer X, nor is he shown to have any notable superhuman abilities or advanced combat training. Instead, his value lies in his operational support, providing essential reconnaissance that aids the main pilots, Joe and Rita, in their fight against the empire. Information about his personal background, his relationships beyond his professional one with the team, and any significant character development he might undergo during the series is not available.