RED Cheetor body...arms and feet modified with chestfrom TFP Smokescreen chest,, blades from Constructbots wing tips and feet from Strafe Constructbots...
Head from Dollar General alpha class Megatron (modified) ..
Wings from spare Strafe figure modified with Combiner Wars limb..
Neck and head Constructbots Strafe. ..
Back of figure is from the skin layout of a deluxe Dinobot.

Start off first by the prepping. When they came out with RED Cheetor, I ditched the head...and waited on the alpha class Megatron. When Megs came out, I bought a lot of the Megs figures.
I popped his head off, modified it. I added it to the RED figure. Slowly, Terrorsaur was actually born. All I did was slowly started piecing the figure slowly by working on it at least 30 minutes a day.
The modifications took 2 months to complete. Then the painting. I used the blood red spray paint for my base. Then I added marker bright red for the highlights.
On the back of the wings, I added a pavement color to make the wing colors pop. The paint is dry but as soon as I get a can of the clear coat and add baby power to give the figure a weathered look, he will be awesome.

Here is the pain in the neck part....the transformation into beast mode. After toying around with transformation, here is his beast mode.
I am working on his gun as a next mini project. As far as the beast mode goes, I added a pair of constructbots Strafe legs so that in beast mode the legs will appear...AS to in robot mode, the beast mode legs can hide in the back.

After 9 months of hard work, I give you Beast Wars Terrorsaur.

Terrorsaur gun coming very soon and the storage will be on his wings where the gold outline is on the 5mm peg port.