I have been planning this figure for about six months now. I got the lab coat from Urban Rev in December and have been mulling over how to do the parts ever since. Last week, I went into a couple of local discount shops and got a couple of bags of cheap PVC dinosaurs for the head and feet, and single one for the tail. The body is a SHS Reed Richards modified with epoxy, and the head completely sculpted over except for the mouth and eyes. I just need to slit the coat up the back a little to accommodate the tail. It was actually seeing the pics of Killuminati's labcoats that initially gave me the idea for this figure.
The croc is one of the Schleich PVC figurines.