Shigeru Saiki. Shigeru Saiki was 38 in Guinea Pig: Mermaid in the Manhole as 'The Artist'.
Mari Somei. Mari Somei was 24 in Guinea Pig: Mermaid in the Manhole as 'The Mermaid'.
Go Riju. Go Riju was 25 in Guinea Pig: Mermaid in the Manhole as 'Male Neighbor'.
Masami Hisamoto. Masami Hisamoto was 30 in Guinea Pig: Mermaid in the Manhole as 'Female Neighbor'.
Tsuyoshi Toshishige. Tsuyoshi Toshishige was >> in Guinea Pig: Mermaid in the Manhole 
Hideshi Hino. Hideshi Hino was 42 in Guinea Pig: Mermaid in the Manhole as 'Director, Writer'Naoki Hayashi. Naoki Hayashi was >> in Guinea Pig: Mermaid in the Manhole as 'Director of Photography'Satoru Ogura. Satoru Ogura was >> in Guinea Pig: Mermaid in the Manhole as 'Producer'Ken'ichi Takashima. Ken'ichi Takashima was >> in Guinea Pig: Mermaid in the Manhole as 'Editor'
Yoshikazu Iwanami. Yoshikazu Iwanami was 26 in Guinea Pig: Mermaid in the Manhole as 'Sound Recordist'Nobuaki Koga. Nobuaki Koga was >> in Guinea Pig: Mermaid in the Manhole as 'Special Effects Makeup Artist'Akio Fukuda. Akio Fukuda was >> in Guinea Pig: Mermaid in the Manhole as 'Production Design'