by Dragonmaster Lou » Mon Mar 10, '14, 6:38 pm
The two Wrens are similar type, different models, in all likelihood. That I agree with. "Wren" could be the general type of android/cyborg, but there would be varying subtypes/submodels.
I think the PSIII Wren is 900+ years old, and, if we go by the American timeline, puts him at roughly the same age as the PSIV Wren.
I don't think the PSIV Wren is a "budget" model at all... Just a model aimed at a different use. PSIII Wren was a smaller (in physical size) model with troop transportation capabilities. In combat, he seemed to be more geared towards rapid, though somewhat lighter, encounters. In terms of present-day gear, he'd be kind of like a heavily armed jeep/humvee sort of thing.
PSIV Wren, however, appears to be designed for technical maintenance and more "siege" weaponry (given his compatibility with Positron Bolt units). He's physically larger and therefore can use larger, more powerful, weapons, though doesn't have the same mobility -- hence the lack of transformation capabilities. He's more of a tank or mobile siege engine type than PSIII Wren.