Lt. Filterberg

A Nazi spy trapped in postwar London hides out in the sewers, emerging only at night to steal food and cigarettes. Years pass, as he goes slowly mad... then he comes across a “fatberg”, a huge mass of grease and oil, mixed with pieces of plastic. This one oozes a viscous yellow fluid, though, and when it suddenly bursts, he is caught in the deluge, choking on the burning fluid. When he wakes he is no longer truly human, but is instead a man shaped mass of grease and cigarette butts, consumed by a craving he can never satisfy.