Kai-san appears solely within the comedic parody *Mobile Suit Gundam-san*, reimagined through a super-deformed art style that exaggerates traits of the original Kai Shiden for humor. He serves as part of the Earth Federation crew aboard the White Base parody setting, diving into comedic sketches and situational gags alongside characters like Amuro-san, Sayla-san, and Bright-san. In one notable interaction from the episode "Dr. Sayla's Consultation Room," Kai-san endures repeated slapping by Sayla-san, an act portrayed as an unexpected source of enjoyment for her, highlighting the series' exaggerated character dynamics. Kai-san also features in a running gag tied to Amuro-san's adolescent fantasies. During a discussion about Zeon mobile suit designs like the Dom's skirt, Amuro's perverted daydream includes Kai-san questioning if Amuro finds Federation officer Matilda attractive due to her large breasts. The punchline revolves around Amuro's horrified reaction to the hypothetical concept of a flat-chested Matilda. His portrayal remains confined to brief comedic segments within the *Gundam-san* anime and manga, emphasizing slapstick and parody.