Chief Servant Londs
Londs is the Chief Servant of the Royal House of Roshtaria. He essentially oversees the entire staff, and holds considerable power within the palace. He is also the head of the Palace Guard.
What else can I say?
Shtalubaugh is one of the top academics of the kingdom. He does history, El Hazardian science, lore, etc. He's a rather valuable resource.
It's notable that he had a bad feeling about Lord Galus even though there were no outward signs of anything wrong. His misgivings were confirmed when Nanami uncovered Galus's identity as the leader of the Shadow Tribes. Astute man, this Professor....