While coordinating closed captioning for the Oscars award show in 1982, Okrand met the producer for the movie '. His first work was dubbing in Vulcan language dialogue for "Star Trek II: The Wrath of Khan", since the actors had already been filmed talking in English. He was then hired by Paramount Pictures to develop the Klingon language and coach the actors using it in ', ', '. He was later hired for the use of the Romulan and Vulcan languages in the "Star Trek" film in 2009. He also created Klingon dialogue for that movie, but those scenes were cut. He was involved in "Star Trek Into Darkness", but only during post-production.