» Does your character have a particular scent?
He smells a lot like old books and herbs -- that kind of rich, earthy smell. Someone with honed senses can tell there's more to him than that for sure.

» What is their heartbeat like?
What heartbeat. :(

» Would they be entranced by Angel's music?
As an undead, he's immune to most charms and compulsions unless they're specifically targeted at undeads, so probably not!

» Anything else you want to add?
Not that I can think of!