Songbird

Songbird (real name Melissa Gold) is a Marvel Comics character who appears in Avengers Assemble. She was given a device by the corrupt corporate executives at Roxxon that allows her to use devastating sonic screams, a power that she uses to commit crimes as the supervillain Screaming Mimi. She joined the Masters of Evil in order to defeat the Avengers.

She later resurfaces as the superheroine Songbird, helping the Avengers defeat Growing Man.