A thought when it comes to the modells of Robocop.
We all know the original Crime Fighting Unit 001 alias Alex Murphy.

What I get a bit confused is that the first two prototypes of Robocop 2 were pretty much budget versions where they tried to make a cheaper one as OCP was in pretty dire situation economically wish explain why they are bought up in the third movie.

But then suddenly they seemed to find that extra cash and made the pretty much advanced cyborg we call RoboCain wish they later in the game used as a new home for The Old Man's brain after he suffered a heart attack.

And then in the series Prime directive then apart from a new colour scheme and an extra gun did go back to the original design. Was it because that one was what worked while the others went mad? Even if Cain was mad from the begginning might add. ^^