So here is my Doom Revenant Demon from the 2016 edition of DOOM. The Revenant is a cybernetic skeletal corpse, equipped with a rocket jump pack, and twin plasma cannons overtop its shoulders. The whole suit is composed of soft memory foam, Smooth-on flex foam-it 6 and about half a gallon of Monster Maker's mask making liquid latex. The jaw moves with my own movement. The intestines are actually several dozen condoms, spray glued together, stuffed with polyfil fiber, and then coated with liquid latex and pigmented.