Kenny McCormick, the muffled-voice character from "South Park," famously wears an orange parka with a tightly drawn hood that obscures his face and makes his speech difficult to understand. Kenny first removed his hood and revealed his face and voice to audiences in the feature film "South Park: Bigger, Longer & Uncut," which was released in 1999. However, the first time he did this in the television series was in the Season 5 episode titled "The Jeffersons," which aired in 2004. In this episode, he speaks without his hood on, and his face is fully visible, although this was not the first time his un-muffled voice was heard. Kenny's voice had been heard before in the movie when the hood was off, and in various episodes where he spoke clearly while dreaming or as a part of a crowd. It's worth noting that Kenny's face was also revealed in the Season 4 episode "Cartman Joins NAMBLA," where you see him without the hood in the hospital, but the shot is from behind, and he does not speak. Kenny's full face and his voice are revealed again in the Season 14 episode "Mysterion Rises," which aired in 2010, where he is a central character without his hood for most of the episode.