Think about it.
Dracula is a vampire who resides in a castle in Castlevania with minions like the Grim Reaper (Death) and many, many monsters. He also returns from the dead most of the time (excluding the best endings for the Chronicles of Sorrow games with Soma Cruz in them).
The castle master (at least, as far as is known with the public releases) resides in a castle with minions (the Witches, for instance) and many, many monsters. Given that Kim's planning a sequel, there's a possibility that this might be the same - the castle master coming back from the dead.