Juzo Kabuto is the name of the grandfather of the main protagonist Koji Kabuto and creator of the Mazinger Z robot.
- Juzo Kabuto/Nagai: The most recognizable megalomanical scientist with a scarred left eye who created the Mazinger Z robot.
- Juzo Kabuto/TV: The more mellow character from the anime and TV Magazine manga.
- Juzo Kabuto/Kaiser: The still living but in hiding version who created Z, Great, and Mazinkaiser.
- Juzo Kabuto/Angels: The creator of Iron Z and a friend of Daemon Abashiri.
- Juzo Kabuto/Shin: Creator of Mazinger Z who modified the arm of Zeus to equip to it.
- Juzo Kabuto/ZERO: The more maniacal and homicidal version from Shin Mazinger ZERO.
- Juzo Kabuto/Robot Girls:
Other Characters[]
- Dr. Heaven: The original Juzo Kabuto, who created Mazinkaiser in a one-shot.
- Juzo Magami: The creator of the Mazinger androids including Seto Magami.