Succubus

"There's a Succubus. I wonder why Dracula deployed Succubus for the Undead Alliance itself?"

--Su Ji-Hoon, Saving Miles

A succubus is a recurring demonic foe in the Castlevania series. Succubi are characterized by their ability to seduce their victims, followed by them consuming their life force. A succubus is a lower class demoness, the exact opposite of the high class vampire.