This is the GP01 Full Vernian Zephyranthes from the Gundam 0083: Stardust Memories OVA series. This machine is essentially the GP01 Zephyranthes, though with numerous improvements for use in space. The original GP01 is basically a ground unit -- in many respects basically a beefed up RX-78-2.
The model is basically a copy of the GP01 I made earlier. The head is identical, but the chassis/backpack is slightly different in order to accomodate the corefighter's upgraded space use thrusters (unfortunately they are all but impossible to see in this image except through the mirror). The shoulder armor has been replaced with protrusions that contains thrusters/verniers. The verniers can retract when not in use. The same is true with the yellow "vents" in the chest (actually verniers hidden underneath the flaps). Skirt plates have been attached and the lower legs have been redone. The feet are actually the same size but now have extension units that give it "clown feet"... I'm not really into it. The shield is the same.
The gun used by the GP01Fb is "about" the same as the GP01's. But I thought it was boring so I replaced it with a 240mm folding cannon designed by Takayuki Yanase (incidentally a mechanical designer in the upcoming Gundam 00 series) in one of his illustration books. Otherwise, the GP01fb never uses this cannon.
I should say that I rather like the GP01 over the FB version...
Software: Lightwave3D (modelling, rendering), Hexagon (some UV's), Freehand (logos), Photoshop (post).
Nice cannon.