Astroswitches

The Astroswitches (アストロスイッチ, Asutorosuitchi) are mysterious devices that are the source of Kamen Rider Fourze's powers. They are infused with Cosmic Energy to materialize armaments known as the Fourze Modules (フォーゼモジュール, Fōze Mojūru). Ten of them at a time can be carried in the Astroswitch Kaban. They can also be used to operate Foodroids as well as serve as power-ups for Kamen Rider Meteor.

There are 40 known normal Astroswitches in total, 10 of which each correspond to one of the attachment ports on Kamen Rider Fourze's limbs, known as Module Basements (モジュールベイスメント, Mojūru Beisumento).

• Circle Module Basement (サークルモジュールベイスメント, Sākuru Mojūru Beisumento): Right Arm. Circle Astroswitches in nature tend to be close-combat weapons, as well as having the capacity to change Fourze's States.
• Cross Module Basement (クロスモジュールベイスメント, Kurosu Mojūru Beisumento): Right Leg. Cross Astroswitches in nature tend to be mid-ranged weaponry.
• Triangle Module Basement (トライアングルモジュールベイスメント, Toraianguru Mojūru Beisumento): Left Leg. Triangle Astroswitches in nature tend to be themed after transport.
• Square Module Basement (スクエアモジュールベイスメント, Sukuea Mojūru Beisumento): Left Arm. Square Astroswitches in nature tend to be battle-support items.