Jon Berg Jon Berg is a special effect artist and occasional actor for the Star Wars saga . He appeared as an actor in the cantina scene for ( 1977 ) . Biography . Berg says about himself that he became fascinated by special effects in movies since he saw Ernest B . Schoedsack ' s " Mighty Joe Young " ( 1949 ) , featuring master technician Ray Harryhausen ' s effects . Berg began working for Cascade Pictures producing TV commercials . This same company also hired Dennis Muren and Phil Tippett , both of whom would eventually work for Industrial Light & Magic . Working as production assistant , Berg had a chance to go to the set of Jack Hill and Juan Ibáñez ' s " House of Evil " ( 1968 ) , a Mexican - American production , where he would have a chance to meet horror star and his personal idol , Boris Karloff . Berg himself keeps a fond memory of this meeting . Berg first confirmed job was anyhow uncredited : He worked in sci - fi B - movie " The Further Adventures of Major Mars " ( 1976 ) , and then as miniature builder for not - spectacularly - better " The Crater Lake Monster " ( 1977 ) , although this time he would appear credited , alongside with colleague Tippett . Berg worked as a stop motion animator , as Harryhausen did before him , for ( 1977 ) . He moved different creatures , specially in the famous " cantina scene " , and he was also supposed to act as different aliens . Although uncredited , he is known to have played Momaw Nadon , the " Hammerhead " ; and also one of the arguing Duros . He is also supposed to play one of the Cantina Band members , particularly Tech Mo ' r , the ommni box player ; however , this last role is unconfirmed and even today a polemic question among experts . Berg continued with science - fiction and horror flicks for the late 1970s , being credited as the only visual effect artist ( model sculptor ) for Michael Rae ' s " Laserblast " ( 1978 ) and as the only special effects artist in Joe Dante ' s " Piranha " ( 1978 ) . In this last movie , he worked with special effect legend Chris Walas . He would return to Star Wars saga for ( 1980 ) , again as a stop motion animator , although he was not officially billed for that part . After that , he would work again with Chris Walas for Matthew Robbins ' " Dragonslayer " ; Berg is credited as a " dragon consultant " , whatever that means . Berg returned to George Lucas ' crew for ( 1983 ) , as a creature consultant . That could be enough of Star Wars for almost any artist , but Berg would return to the Star Wars saga the following year : John Korty ' s TV movie " " ( 1984 ) featured special effects by Berg and Star Wars colleagues Dennis Muren , Phil Tippett and Michael Pangrazio . All of them would get an Emmy Award for " Outstanding Special Visual Effects " , although shared with other TV movies and series . The book " Industrial Light & Magic : The Art of Special Effects " ( 1986 , Thomas G . Smith ) says that Berg himself also portrayed the Gorax monster in the movie . In 1984 , Berg also worked as a consultant or advisor in other movies , including Joe Dante ' s " Gremlins " ( again with Walas ) ; Peter Hyams ' " 2010 " , for Entertainment Effects Group ; and Ivan Reitman ' s " Ghostbusters " , again for EEG . However , Berg left EEG for CWI : Chris Walas Inc . Alongside with other special effects artists from Star Wars , such as Don Bies and Howie Weed , he worked in David Cronenberg ' s " The Fly " ( 1986 ) , being nominated for a BAFTA Award to the Best Special Effects . The nominées for " The Fly " included Berg and Walas themselves , as well as Louis Craig and Hoyt Yeatman . The award , anyhow , was given to the film " The Witches of Eastwick " ( 1987 ) . Berg returned with CWI for Walas ' debut as a director in " The Fly II " ( 1989 ) , where Berg was the creature effects supervisor . During the early 1990s , Berg created monsters . He made robots for Irvin Kershner ' s " Robocop 2 " ( 1990 ) ( with Howie Weed working for him ) , and then as a technical advisor for David Cronenberg ' s fantasy " Naked Lunch " ( 1991 ) . He would then be a moldmaker for Tim Burton ' s " The Nightmare Before Christmas " ( 1993 ) . His experience with Burton would be useful more than ten years after that , when he joined the Star Wars saga for a fifth time , working as model maker in the last installment of the saga , ( 2005 ) . In the meantime , Jon Berg has also been responsible for creating the statue used for the Fan Film Awards , and he was also credited as guest animator in the short " " . Berg is currently active as a special effect artist .