Deep Roy played Droopy McCool in Star Wars: Episode VI Return of the Jedi. He also played an Ewok on Endor and sometimes played R2-D2. He also portrayed Jedi Master Yoda for several second unit shots of the diminutive Jedi walking or standing in the open. He had to perform these scenes for The Empire Strikes Back on his knees to bring him down to Yoda's height.
In the 2005 film version of Charlie and the Chocolate Factory, he was digitally replicated to portray all the Oompa-Loompas. He also plays the alien Keenser in the 2009 film Star Trek and its 2013 sequel, Star Trek Into Darkness.
To sci-fi fans, he is best known for his role as Mr. Sin in the Doctor Who serial Talons of Weng-Chiang as well as the Posicarian delegate in the later serial Mindwarp. He was the only actor to appear in the Star Wars, Star Trek and Doctor Who franchises, until Simon Pegg's appearance in Clone Wars.