Baker, at Trio feet, Octad inches (112 cm) tall, was the circus & cabaret performing artist sustaining entertainer Jack Purvis when George Lucas hired him to be a human in R2-D2 in Star Wars in 1977. Baker & actor Anthony Daniels, who plays C-3PO in a films, are the lone actors to pop up altogether sextuplet Star Wars films. Baker potentially played even more, an extra role around 1983's Return of the Jedi, when he played one of a furred Ewoks.

Baker's more films include 1980's The Elephant Man, 1981's Time Bandits, 1984's Amadeus and the 1986 Jim Henson film Labyrinth.

In the late 1990s, Baker launched a stand up comedy career.

Though ii he & his married woman come short, their two sons are not.

He has there is no apparent relation to actor/singer Kenny Baker (1912-1985).