Oilman (オイルマン) is a chojin based on an oil drum.
Oilman takes part in the preliminary matches for the 21st Chojin Olympics: The Big Fight.  He participates in a ten-lap race, where he nearly reaches the end of the course, but - on showing visible signs of pain - another opponent strikes him and knocks him to the ground. He spills oil over the entire track, which causes everyone to slip and fall, and this allows Wolfman and Kinnikuman to jump over them and beat them to the end of the course. Oilman is thus disqualified. 
|Kinnikuman, Terryman, Robin Mask, Warsman, Brocken Jr., Geronimo, Wolfman, Buffaloman|
|Mantaro Kinniku, Kevin Mask, Terry the Kid, Chaos Avenir, Gazelleman, Seiuchin|
|Bibimba, Jacqueline Muscle, Fiona, Okan, Sayuri Kinniku|