The Boy Detectives Club – The Invisible Fiend

Susumu Namishima

Kogoro Akechi

Hitomi Nakahara

Mariko

Yūnosuke Itō

The Fiend with Twenty Faces

Hiroshi Yamate

Kobayashi

Yasushi Obata

Shimada

Mitsue Komiya

Mitsue

Sanae Mitsuoka

Akiko Shimada

Akiko Kazami

Lady Shimada