Dokugander Battle at Osaka Castle!

is the twenty-first episode of the original Kamen Rider series.
==Synopsis==
Impersonating the biologist Prof. Koizumi, the mature Poison Mothunda seeks the medicine invented by Asst. Prof. Yoshioka.
==Plot==
to be added
==Cast==
to be added
==Errors==
*to be added
==Notes==
*Footage from this episode, featuring Ichimonji's fight with Dokugander, is featured as part of Tobee Tachibana's retrospective in episode 27 of Kamen Rider X.
==Digital Releases==
*Kamen Rider DVD Volume 4 features episodes 20-25.http://www.toei-video.co.jp/DVD/riderguide.html#l2-3
*Kamen Rider Blu-ray Volume 1 features episodes 1-26.https://www.toei-video.co.jp/special/riderbox/
*Kamen Rider 4K Remaster Box 1 features episodes 1-26.
S 1 4.jpg|Kamen Rider DVD Volume 4
Series 1 Volume 1.jpg|Kamen Rider Blu-ray Volume 1
File:Kamen Rider 4K Remaster Box 1.png|Kamen Rider 4K Remaster Box 1
==References==
Category:Kamen Rider