From TheDevastator:
The only thing that really bothered me about Defensor was his head. It was a bit different than it was in the show, so I sought to make a removable head for him. It gave me a little bit more designing freedom. I also re-designed his foot plates so that they were a little skinnier and centered the connecting areas so that they would be flush with the Protectobot they connected to.
...............................................................................................................
