Tokumei Gattai Go-Buster Oh

Go-BusterOh (ゴーバスターオー, Gōbasutāō) is the combined Super Machine System (超マシーン システム, Chō Mashīn Shisutemu) MegaZord form of the Buddy Roids and the first three Buster Vehicles combined with the command "Combine Operation! Special Mission Combination!" (コンバインオペレーション！特命合体, Konbain Operēshon！Tokumei Gattai). The heads of the Buddy Roids form the control panels for the MegaZord and other combined forms.

Arsenal
Go-BusterOh is armed with the Boost Buster Sword (ブーストバスターソード, Būsuto Basutā Sōdo), which has pieces of RH-03 on CB-01's sword. On it's left arm is RH-03's helicopter blades, which can create a (albeit very small) forcefield to protect itself from damage.

The finisher of Go-BusterOh is the Dimension Crash (ディメンションクラッシュ, Dimenshon Kurasshu), where the wheels and rear amplifiers of GT-02 emit a field that paralyzes the Vaglass MegaZord in its tracks, then slashes with the Enetron-powered Boost Buster Sword.

Later in the series, Vaglass were able to complete the new MegaZord, MegaZord Delta, which was capable of stopping the Dimension Crash. However, this is solved through a new finisher move, Explosion Kick (エクスプロージョンキック, Ekusupurōjon Kikku), where it concentrates its Enetron onto one of its feet to perform a destructive kicking attack at the enemy.

Rocket Go-BusterOh
The fusion of Go-BusterOh and the of, the Rocket Go-BusterOh makes its first appearance after  takes over  in an attempt to get back at Captain Marvelous and Tsukasa Kadoya for their duplicity. When Yoko is knocked out of Go-BusterOh, Fourze saves her and she asks for him to take her spot. One of Fourze's friends, Kengo, gives him the Super-1 and Super-3 switches to use in this fight, where the machines take the fight into space.

Rocket Drill Go-BusterOh
The fusion of Go-BusterOh and the of, the Rocket Drill Go-BusterOh makes its first appearance in the battle with. Its finishing attack is the Sentai Raidā Uchū Kikku (戦隊ライダー宇宙キック).

Great Go-Buster
The combination of Go-BusterOh and Buster Hercules.

Go-Busters video game
Go-BusterOh appears in the Nintendo DS Tokumei Sentai Go-Busters video game.