The Elek Module Billy the Rod (エレキモジュール ビリーザロッド Ereki Mojūru Birī Za Roddo) is the main weapon of Kamen Rider Fourze when in Elek States, accessed through the 10th Astroswitch, the Elek Switch. It first appears in episode 5. Initially, the Elek Switch only changed Fourze Base States' right forearm's color from white to gold and armed him with Billy the Rod while he suffered backlash shock from its power. Later, after allowing the Switch's power to course through his body, it allows Fourze to assume Elek States.