Damien is a proud Chelaxian born to a proud noble family- the House of Dralneen is a loyal supporter of the Asmodean rulers of Cheliax. Damien sees his oaths to Asmodeus as part of his personal honor but also the way to keep Cheliax strong and stable. Damien is somewhat embarrassed by his "dear cousin" Zarta.
Quotes from Damien...
"The innocent have nothing to fear."
"Nobody's innocent... *nobody*."
"The Father of Lies loves his children."
"We prefer not to call him the Father of Lies... Fibs, perhaps..."
"If not for Lord Asmodeus, bellies would go empty in Cheliax this night. "