 Both Nelson Shin (director) and Flint Dille (story consultant) has  confirmed that, due to his failing health, Orson Welles had much  difficulty recording all his dialogue for the film and all his  recorded lines also included labored breathing and heavy wheezing.  Shin considered all of Welles recorded lines to be unusable but  decided to put the recordings through a voice synthesizer to give  Welles voice a clearer, more ominous tone. According to Shin,  Unicrons onscreen voice is not the "true" Orson Welles but instead,  an enhanced, synthesized version of his voice.