The V-Changer is the Fivemen's transformation system. The brothers use brace-style units, while the sisters use compact-style devices.

By calling "Fiveman!", the Hoshikawa siblings transform into their combat forms.

The Five Blaster is the standard sidearm carried by the Fivemen. It can shift between a laser pistol for ranged combat and the V-Saber for close-range sword fighting.

Each member carries a specialized weapon: Gaku uses the V-Sword, Ken uses the Twin Arrays, Fumiya uses the Power Cutter, Kazumi uses the Cutie Circle, and Remi uses the Melody Tact.

The Five Tector is power-up armor that greatly increases the team's physical strength and durability. With it, the Fivemen can perform enhanced attacks such as the Brother Attack.

Arthur G6 is the support robot who raised the Hoshikawa siblings. In battle, Arthur can transform into the Earth Cannon.

As the Earth Cannon, Arthur fires a powerful 100,000-degree beam, serving as one of the team's primary finishing weapons.

The Hawk Arrows are five specialized motorcycles used by the Fivemen for rapid ground deployment, pursuit, and combat support.

The Fivemen use coordinated family-based attacks such as the Brother Attack, Super Five Ball, and the Earth Cannon finisher to destroy the Silver Imperial Army Zone's Galactic Warriors.