Ed Gein's distinctive soft, high-pitched, almost childlike voice as portrayed in Netflix's "Monster: The Ed Gein Story" was a creative choice by actor Charlie Hunnam based on limited historical audio tapes and psychological interpretation. Hunnam discovered that this voice was an affectation—an intentional performance by Gein to please his domineering mother rather than his authentic speaking voice. The actual recordings of Gein that exist are rare and suggest he was quiet and soft-spoken, but not dramatically high- pitched or theatrical. The show used this unique vocal quality to symbolize Gein's profound isolation, mental illness, and troubled relationship with his mother, contributing to the unsettling atmosphere and depth of the character rather than reflecting a verified historical voice.