David A. Angar was an individual listed on S.H.I.E.L.D.'s Gifted Index. At some point, he developed throat cancer, and underwent an experimental treatment to cure his cancer. The energy that bombarded his vocal chords destroyed the tumors, but changed his voice. Since then, his voice carried the power to put anyone that hears it, even a whisper, into a catatonic state. When S.H.I.E.L.D. took notice of this, they decided he wasn't too great a threat to those around him. S.H.I.E.L.D. put a muzzle around his face that prevented him from talking, and imprisoned him in the secret sub-basemnt of the Brynmore Psychiatric Facility in Ohio.