Name: Naoto Tamura
Designation: Jiban / Perfect Jiban
A human revived as a cyborg by Doctor Igarashi to fight Biolon. He is capable of reverting to his human identity at will. He holds the rank of police commissioner (as a robot) and detective (as human). Jiban's programming enables him to follow these directives:
- Arrest criminals in any circumstance without a warrant.
- Punish criminals on his own judgment if they happen to be members of Biolon.
- Use lethal force depending on the circumstances.