スラバヤ殿下

Kyutaro Nagasogabe/Eiji Nagasogabe

Midori Miyama

Japanese part-time student who prepares to interpret His Highness Surabaya's words

Engineer at the Applied Atomic Energy Research Institute

Yuzo Tanigawa

Nahoe Minegishi

Spy Joe

Spy Zolkov

Applied Atomic Energy Research Institute Worker with a Tohoku Accent

Grandmother Okin