Setsuko Isobe is the wife of Kenji Isobe, the protagonist of the workplace comedy and action series Ganglion. She is recognized by her kind and caring personality, providing a supportive presence in her husband's life. As a supporting character, her primary role is defined by her family relationships, being married to Kenji and the mother of their son, Takashi Isobe. While the central narrative focuses on Kenji's absurd and often humiliating battles as a low-level operative for the evil Ganglion corporation, Setsuko represents his personal life outside of these bizarre workplace demands. Detailed information regarding her own background, personal motivations, and character development is limited, as her function in the story is largely tied to her family. She does not possess any notable combat abilities, as the action-oriented aspects of the series are centered on her husband and his rival, the hero Hopeman.