Akiya Bandaranaike, first appeared in Marvel's 1987 comic, Strikeforce: Morituri. Her ability to halt vibrations, including sounds within her enhanced range of hearing and heartbeats, earned her the name Silencer.

Silencer

Akiya Bandaranaike, first appeared in Marvel's 1987 comic, Strikeforce: Morituri. Her ability to halt vibrations, including sounds within her enhanced range of hearing and heartbeats, earned her the name Silencer.

All data from the awesome folks at Marvel.