Black Jack serves as the warden of an Icelandic labor camp prison where protagonist Godo is imprisoned following the loss of his citizenship. He supervises inmates mining energy from Earth’s mantle, an operation inducing geological instability. Visually, he displays distinctive facial scarring and two-tone hair, consistent with his design across Tezuka’s other works. His prison demeanor is pragmatic and authoritarian.

During Godo’s incarceration, Black Jack engineers a conditional escape opportunity by challenging Godo to a fist fight and implying freedom upon victory. The encounter concludes with him permitting Godo’s departure, suggesting deliberate facilitation aligned with his personal code.

The film confines his characterization to functional duties as prison administrator. It repurposes Tezuka’s surgeon character design while omitting medical affiliation or associated backstory. His origins, personal history, and evolution across media remain absent from the narrative, with his role strictly limited to Godo’s imprisonment and escape events.