Quintillius Harmon, Lord Snackleford, is a member of Her Majesty the Queen's Right Puissant Society of Sages, Adepts, and Prometheans and works in the Society's submerged laboratory complex in Londinium. His friends call him Snacky.
He has pale skin, very unruly orange hair, and near-opaque dark red-orange googles through which can be seen glowing eyes. He also has a round, brass-colored frame seemingly riveted into his chest displaying a glowing circle, bright at the center and fading away towards the edges. As noted below, he eventually undergoes a fairly radical change in this department.
When introduced, Snacky is Agatha to the dome; he the missing Professor Homlomium; he to everyone at a Society party; he Smokes about the need to summon Lord Bunstable; he is (although initially more interested in the drinks than in the people in the room) when Bunstable's combustion sets off the fire alarm; he accuses Agatha of being at fault. He expresses skepticism about the existence of a "Boilerghast" in the Dome's plumbing systems.for day-to-day operations of the Society's dome, though it's never made entirely clear what his actual job title is. He welcomes
And, not terribly surprisingly, he turns to be heavily the Shining Brotherhood" conspiracy which killed Homlomium and eventually does a spot of Abomination-Summoning in an ancient temple beneath the dome. (Members of the Shining Brotherhood are also known as Grey Hoods.) While it's still an open question whether he's the conspiracy's ultimate leader, after a hostile encounter with Tarvek and Higgs, he is the one who personally to use a modified Summoning Engine to make a mental transfer with the Extradimensional Being who is pulled forth into Europa's level of reality, and thus advance himself to a "second stage" level of Sparkiness, as Queen Albia did so many centuries ago. This effort is , and his first act as an uber-Spark is to show that he (very very unsurprisingly) has no interest in sharing this power with any of his fellow "Shining Brothers" (again, by Albia).in "
Uber-Snacky's reign proves to be very short-lived; he immediately gets into a conflict with mentally-revived monster-enthusiast Dimitri Vapnoople, who summons up a bunch more unwelcome visitors. Agatha is able to banish all of them back where they came from, sending Snackleford into a very ill-timed Sparkish rant which Vapnoople takes full advantage of, his distracted opponent and tossing him into the monster-swallowing vortex. He then reconsiders and follows Snacky into the breach, intending to seriously get in touch with some monster-controlling power; so far neither has reappeared.