(written from a Production point of view)
Deep Roy (born 1957) is an actor and stuntman who played the role of Keenser in 2009's Star Trek.  He is noted for playing Max Rebo Band member Droopy McCool and an Ewok in Star Wars: Episode VI - Return of the Jedi and for his frequent collaborations with director Tim Burton, particularly his portrayal of all 165 Oompa-Loompas in 2005's Charlie and the Chocolate Factory. In the special features of Star Trek, he is shown doing the Oompa-Loompa dances between takes.
Deep Roy was born Muhinder Purba in Nairobi, Kenya, to Indian parents. He is a little person, standing at 4 ft. 4 in. tall. Roy began his career in entertainment in England as a stand-up comic in local cabaret clubs.
Roy's first film role was the Italian assassin in the 1976 comedy The Pink Panther Strikes Again. Also in 1976, he appeared in "The New Avengers" television program, in the episode "Target". The following year, he appeared as Mr. Sin in the Doctor Who serial "The Talons of Weng-Chiang". (This means that Roy, along with costar Simon Pegg, are among the ranks of actors who have appeared in both Doctor Who and Star Trek.) He also worked on the British science fiction series Blake's 7 as both a stuntman and a guest star. Given his role in Star Wars Episode VI: Return of the Jedi, he is the first and only actor to appear in Star Trek, Doctor Who, and Star Wars.
In the 1980 cult film Flash Gordon, Deep Roy played Princess Aura's pet, Fellini. He later appeared as Teeny Weeny, the rider of the "racing snail", in the popular 1984 fantasy film The Neverending Story. Fellow Star Trek alum Alan Oppenheimer lent his voice to this latter film.
Roy's subsequent film credits included Rising Storm (with Zach Galligan and John Rhys-Davies), Disturbed (starring Malcolm McDowell and Clint Howard), Freaked (with William Sadler), and Under the Hula Moon (with Carel Struycken and William O. Campbell). He also played the post office clerk in the 2000 blockbuster How the Grinch Stole Christmas. He also made a guest appearance on The X-Files, playing the role of Beggar Man in the 2001 episode "Badlaa". The X-Files was executive-produced by John Shiban, and the episode in which Roy appeared also featured Jane Daly and Michael Welch.
He first worked with Tim Burton on the 2001 remake of Planet of the Apes, in which Roy played the niece of the villain, General Thade. This film also featured Erick Avari, Cary-Hiroyuki Tagawa, and David Warner in the cast. Roy's next collaboration with Burton was the acclaimed 2003 fantasy Big Fish, in which Roy played Mr. Soggybottom.
Perhaps Roy's most notable performance is that of the Oompa-Loompas in Burton's 2005 adaptation of Charlie and the Chocolate Factory. Roy played all 165 Oompa-Loompas in the film, which sometimes required him to repeat the same movements several hundred times. Each individual performance was then digitally inserted into the film. Roy's most recent collaboration with Tim Burton was the 2005 stop-motion animated Corpse Bride, in which he voiced General Bonesapart. He later made a cameo as an Egyptian guard in 2009's Transformers: Revenge of the Fallen.
In addition to his acting career, Roy has performed stunts in such films as Hook, Wes Craven's New Nightmare, Matilda, BASEketball, and Van Helsing.