Yosaku-san is a recurring gag character in the broader *Kinnikuman* series. He frequently appears in various minor roles, such as a restaurant worker, announcer, or background figure. Yosaku-san is particularly known to perform naked fan dances whenever television cameras are present. His tendency to appear unexpectedly in different contexts earned him the nickname "Be Anywhere Do Anything Yosaku-san". Within the specific special "Kinnikuman: Kessen! Shichinin no Seigi Chōjin vs. Uchū Nobushi", Yosaku-san is not mentioned; synopses and character lists for this special focus solely on the primary plot involving the Space Samurais and the Justice Supermen.