The Go-Buster Oh is the combination of the Go-Buster Ace with the GT-02 Gorilla and the RH-03 Rabbit. A barrier is erected during formation sequence to deflect enemy attacks, though the barrier is rather weak and would not hold long. As such, the team has to be quick or the combination would fail. Its main weapon is the Boost Buster Sword, which combines the Go-Buster Ace's sword with thrusters of the RH-03. The Go-Buster Oh can use the rotor blades on its left arm to generate a mini force field. The force field generated between the blades would be used as a shield. Its finishing move is the Dimension Crash, where the Go-Buster Oh creates a tear into sub-space to trap an enemy Megazord before using the Boost Buster Sword on it.

After taking over for Yellow Buster in piloting Go-Buster Oh, Kamen Rider Fourze uses the Rocket Switch Super-1 to arm Go-Buster Oh with two Rocket Modules on its arms becoming Rocket Go-Buster Oh.

Rocket Go-Buster Oh then becomes the Rocket Drill Go-Buster Oh after Kamen Rider Fourze uses the Drill Switch Super-3 to arm it with two Drill Modules on its legs. Its finishing move is the Sentai Rider Space Kick Rider Kick, which is activated through Fourze's Limit Break and Red Buster's Morphin Brace.

In Tokumei Sentai Go-Busters the Movie: Protect the Tokyo Enetower!, the FS-0O Frog replaces the RH-03 Rabbit in the formation to create Special Ops Combination Go-Buster Kero-Oh. It is armed with the Ene-tan Screws on its both arms and a missile launcher on its left arm which can fire the Tadpole Missiles.