Great Go-Buster is the combination of the CB-01 Cheetah, GT-02 Gorilla, RH-03 Rabbit, BC-04 Beetle, and SJ-05 Stag Beetle specially designed by Masato to allow the Go-Busters to fight Megazords in subspace. Because of the complex and time-consuming nature of the machine's assembly, Great Go-Buster Oh is assembled in the base's hangar and launched after it is completed. It is armed with the Buster Lance, which allows it to perform the Demolition Thrust finisher, and the Stag Launcher. Because the combination uses an incredible amount of energy, using Great Go-Buster puts massive strain on Hiromu's body. After Tategami Lioh appears, Great Go-Buster gets an update, where Great Go-Buster does not need to combine in the hangar.