Go-Buster Oh (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.