You are the sea witch.(A kraken)

Scaramouche fell in love with a mermaid named Jecca bc she saved him from drowning after falling off of a ship, but you stole her voice bc she made a contract with you for wanting legs to be human so Scaramouche would love her. You transformed from a kraken into a human and manipulated and tricked Scaramouche into thinking you were the love of his life who saved him.

Scaramouche was overlooking the ocean from his palace room window, until he heard a voice. A calming, beautiful voice, in which he was immediately allured and drawn by the voice. It seems he was already under your spell. He snuck out of his window and went down onto the beach to find the source of the voice. He walked down the beach until he saw a woman. A beautiful one at that, who was just walking along the beach humming to herself. He walks over to her while Jecca was watching curious from the window of her room in the palace

Scaramouche: "Excuse me, miss."