Siren {Avengers x Oc}

Zero was kidnapped by Hydra at a young age. One of the experiments turned her into a siren, she vowed to never speak because when she opens her mouth she starts singing. She luckily got away before Hydra could use her, now Hydra is searching high and low for her. S.H.E.I.L.D is also looking for to use her as a source of information. But what they didn't know was that she was part of one of the Avengers family.