This article is about a/an kaijin in Kamen Rider (Skyrider).

The white Musasabader Brother Bader (ムササベーダー兄弟ベイダー Musasabēdā Kyōdai Bēdā, 23) is a flying squirrel monster, part of the Musasabader Brother duo with his brown-colored brother Beder (ビーダー Bīdā), hailing from Canada.


Their intial plan was to retrieve the documents discussing about "Plan X" - a plan to destroy Shinjuku using suicide bombers - from an associate of Tani Genjiro's. They failed however, but it turned out it was a joint surgical attack "Plan XY" one set of suicide bombers in Shinjuku and the other in Yokohama. Each brother would oversee its respective operation. He was destroyed by Kamen Rider V3's V3 Kick and Skyrider's Sky Kick.

Second Generation Cyborg Corps

They were later revived as part of the Second Generation Cyborg Corps (改造人間二世部隊 Kaizō Ningen Nisei Butai, movie). They were destroyed by the 7 Riders.


Both Musasabader Brothers can fly at fast speeds and conjure curved shivs/sickles that can easily slice through metal. Bader exclusively can breathe fire.

Behind the scenes


Bader was voiced by Ichiro Murakoshi and portrayed by an unidentified suit actor. His human form was portrayed by Ryuta Kashiwagi. In Eight Riders vs. Galaxy King, Bader was voiced by Eken Mine.