The Sludge Monster, Terrifying Killer Smog

is the eighty-fifth episode of the original Kamen Rider series.
==Synopsis==
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==Plot==
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==Cast==
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==Errors==
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==Notes==
*This episode aired on NET alongside episode 18 of Android Kikaider, Black Chameleon's Phantom Heist Strategy.
*Footage from this episode featuring Utsubo Games is featured as part of Tobee Tachibana's retrospective in episode 27 of Kamen Rider X.
==Digital Releases==
*Kamen Rider DVD Volume 14 features episodes 80-85.http://www.toei-video.co.jp/DVD/riderguide.html#l2-3
*Kamen Rider Blu-ray Volume 4 features episodes 80-98.https://www.toei-video.co.jp/special/riderbox/
S_1_14.jpg|Kamen Rider DVD Volume 14
Series_1_Volume_4.jpg|Kamen Rider Blu-ray Volume 4
==References==