|Voiced by||Peter Cullen|
GT-6 was the co-pilot on the StarWing test flight. When the ship was taken over by Prime Evil, GT-6 and pilot GT-7 hid themselves behind large mailbags in the main hold. There they were found by the Ghostbusters and Futura, who proceeded to help them regain the ship from Prime Evil, although they first found themselves locked up in the ship library.
When Prime Evil ordered GT-7 and Jake Kong Jr. onto the bridge to prevent the StarWing from crashing into Mercury, the Ghostbusters managed to escape from the library and entered the video room. There GT-6 informed the others that there was a new, non-human passenger on board: Fangster. Later, he helped Futura take out one of the Robot Guards who were under Prime Evil's command, by throwing a bucket of water at it to make it short circuit.
Although the two robot pilots GT-6 and GT-7 were practically identical, GT-6 was slightly shorter in stature than GT-7.
GT-6 first appeared in the episode Scareplane.