Head: Crimson Guard
Helmet: Clone Trooper
Torso & arms: Forgot
Legs: Snow Wolf

I made this custom while I was mix and matching figures and then realized that I had a Clone Trooper with the removable helmet in my lot. At that moment I wanted to make a Clone Trooper which turned out to be a Snow Trooper at the end.

I had a hard time to take him apart because I didn't have a small enough screw driver. Eventually, after I got the figure apart, I found that the screw was completely stripped. Luckily I had a lot of spare screws that were still in good shape.