- Name: Kinkotsu Obaba (キン骨オババ)
- Classification: Gokuaku Chojin
- Homeland: Planet Dokuro
- Chojin Kyodo: 20,000 Power
- First Appearance: Episode 77
- Seiyū: Keiko Yamamoto
- Created by: Kenji Terada
Kinkotsu Obaba is Kinkotsuman's aunt (his mother's older sister) and an anime original character. Along with her nephew and Iwao, she was originally from the Gokuaku Chojin realm (like herself, this plot device only appears in the anime). She has the characters Obaba (オババ) written on her forehead. She likes to watch far away matches on her crystal ball and possess the ability to warp people to other places (in the movie Hour of Triumph! Seigi Chojin, she also seems to possess the ability of time travel). She likes to flirt with hunky men, particularly Detective Gobugari, much to his disgust.