Replaced Elaine Alexander/Clive Revill's original performance and voice, respectively, as the Emperor with a recently made digital appearance in the El imperio contraataca (1980) DVD. This newly-filmed image was retained in the Blu-ray release.
Based his character Emperor Palpatine's unusual voice on the Japanese method of using your stomach to project yourself. The result was a strange, guttural croak that Lucas decided was perfect for the character of Palpatine. In an earlier draft of El imperio contraataca (1980),
the Emperor was described as having a voice that was even deeper and more terrifying than Darth Vader's.