Houve muito debate sobre isso, mas eu sempre me aliei ao ' Máscara . 'Mask' é uma disciplina da Sith Alchemy:
A Sith Alchemist could use the Mask to literally reshape an individual's appearance, altering a body at the molecular level. Very little was beyond this technique, limited only by the craftsmanship of the user. Features, age, disfigurations, even species could be concealed with the Mask (though the latter would require an incredible amount of skill to accomplish convincingly). Owing to its molecular nature, the technique lasted until altered, and even a thorough medical examination would not be likely to reveal anything out of place, unlike the tell-tale scars of surgical alterations.
...
The technique wasn't entirely without risk. The process itself could be incredibly painful, and complications from the procedure could result in serious injury or even death. There was also one rarely-encountered oddity with the Mask technique. As it was a product of the dark side of the Force, on rare occasions it would resonate when exposed to powerful blasts of dark side energy. If the subject was not careful, the Mask would literally melt away, horrifically disfiguring the individual and making further attempts at concealment (even with the Mask) difficult.
Agora, isso foi inventado para o jogo de RPG Starwars ... Mas parece consistente com a visão de Lucas; ele era um vilão desagradável, mau, muito mais velho do que aparecido, que ocultava sua aparência sob uma fachada agradável para facilitar suas ações políticas. Um de seus próprios truques malignos, refletidos de volta para ele, foi capaz de ignorar seu disfarce .. Mas ele virou isso para sua vantagem, alegando que os Jedi tinham 'desfigurado' ele.
(Nota: os história de jogos de RPG (mas não as estatísticas) são considerados C- canon . ')