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Astronauts report seeing fireflies in space, but they are really gaseous beings led by the evil Toxor.
Release date: 1963-05-14
Season number: 1
Episode number: 20
Runtime: 27 minutes
Kazue Tagami - Atom (voice), Youko Mizugaki - Uran, Akihiko Mitsueda - Atlas, Shingo Kanemoto - Detective Tawashi, Kiyoshi Komiyama - Cobalt, Hisashi Yokomori - Tenma Hakase, Shinpei Sakamoto - Detective Nakamura