This is The Count! He is a vampire, who was turned into a Ghoul. As a result, he has a thirst for blood, but cannot satisfy it, for living creatures' blood provides no nourishment to a ghost, and other ghosts have no blood! This caused him to go stark raving mad, and he went on a spree, killing hundreds in an attempt to quench his thirst.
This is the Baron. He runs the entire steam industry! You'll note he's a ghoul, but certainly his body looks much larger than the Count's, who has a normal-ghoul sized body. I wonder why that could be...
