Drom's a Daarl demon, a fairly harmless species who work primarily as scholars due to having photographic memories.

In Drom's case his parents were killed by an Angel attack, and he was adopted by the deflecting Ju Yon. He was raised by the Angel for a while until they were caught by the rest of Ju Yon's flock and Ju's memory and magic were taken from him.

Before the spell could take hold, Ju Yon used to rest of his magic to send Drom somewhere safe, and the little guys been hunting down his adopted father since. He's heard of a memoryless fallen angel being seen in Resinwolf House so his plan is to check out there now.