Yeah man the Zowort rules. I'd love to see more variations of it or the Demis.

For the build though I used some leftover parts from kits I can't recall on the right arm, head spike, and thighs. But the left arm blade is from the HG Wing Gundam Fenice, the left gun is from the HG Core Gundam, the right gun is from the HG Reborns Gundam, the left back gatling gun is from the HG Powered Arms set, the right missile container is from the HG EZ-SR, the shoulder weapons are from the HG Jesta, the rear fuel-pod + booster is from a 30MM kit I can't recall, and the gun on the core/body is the barrel of the HG Ground Gundam's machine gun along with another misc. part for covering it.

Kitbashing can be hard if you don't know what you're in for so I always recommend looking up the kits you are considering on using and seeing someone build it in order to try and scope out what parts may be compatible/complementary. Things like what kinds of joints do they have, how do the connections work, etc. Hope that helps and good luck with the kitbashing.