|This article is about a/an monster in Kamen Rider, the original series.|
Poison-Mothdar (Caterpillar Form) (ドクガンダー Dokugandā, 20 & Rider vs Shocker) – A caterpillar monster. Can breathe explosive gas and also assume the human appearance of a gentleman with a black top hat and coat. His personal emblems, worn on his Combatants' masks, are a caterpillar and a moth. Capable of spewing mouth webs that form his cocoon. Poison-Mothdar could not keep up with Kamen Rider 2 in direct combat and was defeated by Kamen Rider 2's Rider Kick. Rider 2 saw a white shell emerging from the river afterward, and assumed Poison-Mothdar had not died yet. A second Poison-Mothdar in caterpillar form made a brief appearance in the monster army of the Kamen Rider vs. Shocker movie but did not actually have active participation in the movie.
- Poison-Mothdar's Imago Form (21, Rider vs Shocker) - Poison-Mothdar's moth monster form. The form Poison-Mothdar took after breaking from its white cocoon. Flight capable, able to release explosive blasts from his fingers, and also recreate the cocoon using mouth webs. His human form was remodeled to match the dead Professor Koizumi (小泉教授 Koizumi Kyouju). Poison-Mothdar captured and forced the real Koizumi's research partner, assistant professor Yoshioka (吉岡助教授 Yoshioka Jukyouju) to help with his studies of cocoons, accelerating the creation of an army of Poison-Mothdars for Shocker. However, Yoshioka sabotaged the experiment. Even in his new form and using various hostages, Poison-Mothdar was still no match for Kamen Rider 2. He was destroyed by Kamen Rider 2's Rider Kick. The explosion created by the attack destroyed Poison-Mothdar's entire base alongside it. Poison-Mothdar would return later in the movie Kamen Rider vs. Shocker. He helped a kidnapping operation proceed smoothly, but was left behind alone, fighting Kamen Riders 1 and 2. He was finally destroyed by Kamen Riders 1's and 2's's combined attacks.
Video game appearances
Kamen Rider Club
Behind the scenes
Poison-Mothdar was voiced by Mahito Tsujimura (辻村 真人 Tsujimura Mahito).
Appearances in other media
Kamen Rider Manga
- Footage of Poison-Mothdar defeat by Kamen Rider 2 in episode 21 appeared in the TV special Birth of the 10th! Kamen Riders All Together!! (1984), in a recap of the ten Kamen Riders.
- Kamen Rider
- Kamen Rider X
- Episode 27: Special Edition, Full Force of Five Riders!! (archive footage only)
- Birth of the 10th! Kamen Riders All Together!! (recap; archive footage only)
- Kamen Rider 1 Through RX: Big Gathering (archive footage only)