Machine Wars was a strange, strange line. Admitedly I didn't buy any of its toys since I was more interested in Beast Wars at the time, and I think I might've been in the majority.. I don't think Hasbro invested much thought into that line either and probably just did it in attempt to please the "trukk-not-monkey" crowd (I mean, they made Prowl into a formula 1 car with a green head..).