Sigma Six Ice Cream Soldier-
Ice Cream Soldier is the Titan sub's targeting gunner. As Firefly's protege on the Titan many thought he too was a sleeper COBRA agent. He is constantly trying to prove he is not like Firefly. Lt. Stone has tried to work with him to get over it. He has devoted himself to bringing Firefly to justice. His constant tinkering in the weapons lab allowed him to develop a laser rifle specifically to snuff out Firefly's plasma flames.

I tried a thermochromic pigment, I got it for possible eco-warrior battle damage. When cold it's a bright red, when warm it's a milky white... Ice Cream Soldier hot/cold...