Now that I'm generally happy with the look of a standard hybrid/broodbrother for the cult, I've been tinkering with more plastic to construct some more bestial hybrids. These will carry special or heavy weapons in the various units. I'm leaning towards using the Astra Militarum book as a guide to unit construction, but I'm not really big on loads of tanks, so the jury is still out. The Militarum Tempestus book looked promising, but the f@$k*%g thing is sold out.
The fellow above uses a Deadzone plague model as the base. (Many thanks to Paul from the excellent sho3box blog for some great leads on parts for the hybrids.) His original head is teeny tiny, which is great as the mask fits on lovely in it's place. He's so deformed that it looks suitably grotesque. The third arm is verging on too large, but I'll be chopping it up to pose it better anyway. I still need some proper weapons, I guess the Cadian Imperial guard kit will furnish those, I can use the arms on my metal hybrids as well I guess. I have some dark eldar talos sprues coming my way, which are loaded with biomechanical goodies. Seeing as this is an infected mechanicus cult, they should fit in great. Tubes, limbs, odd spinal augmentations, this kit has them all. I think that should then finish the main quest for parts, and the assembly can really kick off. I'm already looking forward to converting crypt horrors into oversized mechanically augmented hybrids.