I also made the red version of the Force Snake Eyes using a Military and Police Zaku.
The "Zaku Force Snake Eyes Specification [Pyro]" is one of the units of the Force Snake Eyes, a team that participates in the Klava (clan battle) battles in Mobile Suit Gundam Sieg Axe. I made the blue "Yeti" unit a while ago, but since I had the chance, I decided to make another one as well.
This time I tried to recreate it with a Military and Police Zaku.
The fin (?) on the back, its biggest feature, was scratch-cut from plastic sheeting. I fixed it to the leg frame using surplus parts from other Military and Police Zakus.
The shield on the right shoulder is a GQ civilian (factory) model that I made myself a while ago.

Zaku Force Snake Eyes Specification [Pyro] (GQ) Style | GPO144's Gunpla works