Nuuuu, I prefer the Gunlord ideaaaaaa
Here lemme write the story for you:
"Alucard and Maria finally reached the top of the castle, where Shaft was waiting for them...along with a very nasty surprise.
"Hah hah hah, what a pity your journey will end here, hunters. Feel the power of...Gunlord's Spirit!!!!"
Streams of lightning coalesced around Shaft's hand, forming themselves into the shape of a cat for a moment before streaming towards Maria with a loud clap of thunder. Alucard could only watch in horror as the energy coursed into the maiden's body...before stopping suddenly.
"M...Maria? What happened?"
'Prunyuu~' she exclaimed, meowing contemplatively.
"M-Maria," stammered Alucard, "What's wrong? Why are you--"
He couldn't finish the sentence before she pounced on him, nibbling frantically at his ears. Within moments, Alucard had been nibbled to death.
RIP castlevania"