The Custom robo is the centerpiece of the Custom Robo world. They are miniature robots that have effectively become the new standard of conventional weapons. The average Robo is 8 or 10 inches tall, but nonetheless very capable of immense destructive power. While robos are usually deployed inside the virtual environment of , some robo commanders have government permission to deploy their robos in the real world to stop renegades. When not in use, robos are stored as compact cubes, in both the virtual and real world. Sometime before the events of Custom Robo (GameCube), Robos were restricted to functioning only within the holosseums, incapable of existing in the real world except in inactive cube form.