Me and my Parents are from a small town called Harero Mexico. When I was 5 our village was under attack by Hydra. They started attacking and before my parents were killed, they said an incantation holding my hands. After that when hydra broke into my home and seeing my parents dead on the floor I started screaming and crying and that's when my Sonic scream kicked in and then I knocked out the Hydra Agents.
After a couple hours shield agents were looking around looking at the destroyed village and that's when Fury and Maria Found me crying inside my destroyed home. When they try to get near me and make sure I was ok my eyes turned fire red. That's when they knew I had abilities.
After they calmed me down they brought me to shield where I've been working to master my skills ever since. I became a shield agent and train closely with either Maria Hill, the Black Widow, or Clint Barton.