Ukobach, by ridureyu
Described in Collin de Plancy’s Dictionnaire Infernal as a relatively low-ranking demon whose job it is to maintain Hell’s furnaces, keep the fires stoked, and maintain their oil reserves – oil made from the blood of the damned, of course.
Not to say that Ukobach hasn’t gotten up to anything, though! Aside from being a regular enemy in the Castlevania games (hah!), this demon has mischievously run around on earth – and according to ancient tradition, Ukobach invented fireworks and fried foods.
You know, with those last things in mind… I see nothing evil about this demon. Thank you, Ukobach, for inventing America.