Helmet, Head, Sword and Gun (Not Pictured) - JvC Guillotine
Torso, Back Pack, Shoulder Armor - 25th Eel
Arms - 25th Copperhead
Legs - Beachhead

I've made more than half of the Plague now, and Guillotine was one of the first few I did. In general my concept for the Plague is to retain some semblance of color or design of the unit that each character comes from, as an almost all black unit seemed too boring visually. I'll admit the idea is a bit better than the execution here, in large part because the Eel torso is too thin for the arms, which are the second pair of arms I tried.