The Plunderbird Robots

So far there has been three Plunderbird robots. These are shown below in this picture

On the left of the robots is Plunderbird 1, then the center one is Plunderbird 2 and you guest it the other is Plunderbird 3, also known as Plunderstorm. Plunderbird 3 was painted blue for the T.V but when this picture was taken it was still under construction.