Knock me over with a feather!! Definitely works as a SW:A baddie and yes, that Fallout fig would find a brother in this one, for sure. And yeah - the accessories list is unbelievable. I can see a W40K space marine jetpack, a sniper rifle from ROC General Hawk, gasmask from (pick one) Pit Commando/Beachhead?/Cobra Shock Trooper, (whic was then glued to a Gal.Marine helmet?), sledgehammer from a Neo-Viper, backpack from a Sandtrooper, hoses from (I think?) a 25th Paraviper... and on and on and on...
Art was looking for customs to manipulate that are sci-fi but not obviously SW, right? I'd say this one fits the criteria!