The Vulcan language is a fictional language in the Star Trek universe. Vulcan names as spoken and written among non-Vulcans were, at best, only approximations of actual Vulcan names. Correct pronunciations using non-Vulcan phonemes, and accurate type-setting had a tendency to prove non-native efforts to reproduce Vulcan family names highly inadequate. Linguist Marc Okrand is credited for creating the Vulcan spoken language for Star Trek II: The Wrath of Khan.