These weren't based off Hydra's designs, however she is a Mercs member and was with us for DragonCon, and her designs are far better then what I could ever put on paper =). All my armor is made by my own design. The red suit was patterned after Rav Bralor/Vhonte Thervo from Tom Hodges' LFL artwork. Patterns for these sets took hours to hand draw and measure out, nothing done currently could give the shape and hug that was required.
I'm always working to raise my skill level at the forge and dishing stump. One of my next projects is working on custom blades and blasters (gotta crank up the lathe!).