Counterattack! The Underground Space Choujin (逆襲!宇宙かくれ超人,, Gyakushuu! Uchuu Kakure Choujin) is the fourth theatrical film based on the anime series Kinnikuman. It was released in Japan on July 13, 1985 alongside Dr. Slump and Arale-chan: Hoyoyo! Dream Capital Mecha Police, Captain Tsubasa: Great Europe Play-Off, and Dengeki Sentai Changeman: Shuttle Base Showdown. It is set after the Dream Choujin Tag Arc. It is the first film to feature the character Geronimo and the last film where Eiji Kanie supplies the voice of Ramenman. It is also the shortest film of the series. It is based on the Kinnikuman special chapter Robin Memo (ロビン･メモ).