I haven't tried to rank it up just yet. I plan to do a little more to the base, just glued it for now to prime it. I plan to run it solo so not too worried about the ranking up aspect but I'll let you know when it finishes drying.
As others have said it is a Gamezone model. There are 4 or 5 different looks but personally I felt this one looked the most menacing and bad-ass. The rider and the plastic bits on the coldone's head are from coldone cavalry, the right arm is from temple guard modified using a second temple guard weapon to make it a great weapon inspired by Chakax, and the left arm is from saurus warriors; I felt it looked a little to plain so I used some feathers from the terradon bits I had lying around.
Overall it worked out really well. The GZ coldones are not as wide as the GW ones so I had to fill in a little green stuff there. Also, the GZ models aren't the greatest by any means, the rider I threw out was severely miscast and in my opinion unusable for its intended purpose. I had to do a lot of filing and green stuff work to fit it together correctly and fill in all the gaps but it came out good in the end.
Thanks for all the comments. I hope to have it finished soon.