Primary

• Kouji Kabuto Boyfriend of Sayaka Yumi
• Kouji Kabuto Enemy of Baron Ashura
• Kouji Kabuto Pilot of Mazinger Z
• Kouji Kabuto Enemy of Count Brocken
• Kouji Kabuto Older Brother of Shirou Kabuto
• Kouji Kabuto Grandson of Juuzou Kabuto

Extended

• Sayaka Yumi Girlfriend of Kouji Kabuto
• Baron Ashura Enemy of Kouji Kabuto
• Baron Ashura Expy of Baron Ashura
• Mazinger Z Expy of Z-chan
• Juuzou Kabuto Grandfather of Kouji Kabuto
• Juuzou Kabuto Grandfather of Shirou Kabuto