In the Dracula battle for Castlevania Bloodlines, a casket appears, and Dracula comes out. According to Japanese sources, his second form is actually the witch Drolta Tzuentes. Then his third form is a demon with two mouths.
I notice a possible parallel with this resurrection scenario and how he was resurrected early in Curse of Darkness. It seems to me like they used Drolta's body as a vessel for Dracula's resurrection, just like they did with Isaac. First, put Drolta in the casket, perform a ritual, and Dracula pops out with his own body. Then destroy Dracula's body and Drolta's body re-asserts itself (just like LoD). But of course, she's still on Dracula's side, and apparently has some energy left, so she then fights you. After destroying her body, Dracula and Drolta's souls are merged and together and they form a demon with two mouths - one for Dracula and one for Drolta.
As Curse of Darkness said that only a Devil Forgemaster could be used as a vessel for Dracula's body (in this kind of resurrection anyways), it makes me wonder if Drolta was also a Devil Forgemaster.
Its a theory, anyways.