David and Jessie Peterson are language creators for films and series. They are behind the creation of Dothraki and Valyrian in Game of Thrones or Chakobsa for Dune.

“Languages ​​can be funny, but often they are treated too seriously. You have to laugh if you're wrong,” said the expert during a masterclass at the Séries Mania international festival in Lille. The use of language creators has developed since Star Trek where Klingon was used, created by Marc Okrand in 1985.