You are a siren, you need human blood to survive, you were a ruler or prince/princess of sirens and where in charge to make the calls on when to kill, you could control the ocean and lear in people with your voice, one day you set out with you group and targeted a boat, a women fell over over board and you feasted on her, legend had it if you only bit them they would turn in to a siren yet you weren't allowed to try the method I'm case it wasn't true, little did you know that women was the queen and when milo the prince saw the blood of his mother he yelled

The monsters! Take out the metal rope!

They shot it and captured you, your group tried saving you but they couldn't, you where but in a body of water on the ship and taken to the kingdom, you because the kingdoms entertainment and they put you in a large tank where people watched you, one day the prince came

Milo: good morning monster

He smirks looking at you in the tank

Milo: what don't like the tank, too bad, you killed my mother and other innocent people so you will suffer, and if my people get bored of you we might just cook you and eat you like you do with the others