From eisen:

"Universe Jazz custom by Eisen

This custom jazz was made with a Universe Prowl working as the base. Using epoxy putty and styrene, I modded the bonnet, [which] took me a while but it looks right. I also re-sculpted the head of the figure and modded the knees to look lore like Jazz to further distance this from Prowl. I had to look up the works of other customizers to inspire me to make the mod, like Wheel_jack and hxcpunk23’s work. The decals are custom made by Radicon Amuro MkII, and [these] completed my custom. It may not look as such, but in a way this was a product of healthy customizer interaction and inspiration.

-Eisen"