Windmill Mask was used in coordination with the Black Cross' Battler fleet to find and destroy EAGLE locations, with the hopes of using it to find and destroy the Gorengers' headquarters. After an initial encounter with the Gorengers, he decides to draw them out by attempting to abduct a Dr. Kuroda in order to force the heroes out to him. The Gorengers save Kuroda, but Daigoro Kumano is captured during an attack. The Gorengers plot a plan where Kaijo takes Kuroda's place in being offered in exchange for Kumano's release, but while the plan nearly works Kaijo is found out and the real Kuroda is abducted in secret while being replaced by a Zolder.