In 1980 Alberca et al. described a patient with a syndrome of increased muscle irritability, who presented ondulating muscle rolling movements and electrically silent cramps, myoedema and muscle reactions to mechanical stimulation similar to myotonic response, suggesting a disfunction at myofibrillar level.
For c-3po, it was a costume, Anthony Daniels played c-3po: For R2-D2, It was a costume and a remote controlled robot. CGI was also used in the prequel trilogy. So, they had Kenny Baker to play him : And from Portrayal section of wookieepedia article on R2-D2 :
Tom Holland voices Walter and Will Smith plays Lance Sterling in Blue Sky Studiosâ âSpies in Disguise.â Fox Animation, Chernin Entertainment and Blue Sky Studios have cast Will Smith and Tom Holland in the upcoming animated film Spies in Disguise. Spies in Disguise is a buddy comedy set in the high -octane globe-trotting world of international espionage. Smith (Men in Black) voices Lance Sterling, the world's most awesome spy.