Xaphan
Xaphan: A demon said to hail originally from one of the lower orders of Heaven. According to de Plancy's Dictionnaire Infernal, Xaphan was something of an inventor even while he still resided in the heavenly sphere. He was recruited for the rebellion and he devised a plan to blow up the celestial realm. Of course, this plan was never carried out because Xaphan and all his compatriots were overthrown and cast into the Abyss. Residing now in the infernal realms, Xaphan is said to man the forge of Hell itself, fanning the flames for the rest of eternity. His symbol is a bellows.
SOURCE:
The Dictionary of Demons written by Michelle Belanger