Back in 2018, I interviewed language creator David J. Peterson about how he invented Dothraki for Game of Thrones and other fictional languages in fantasy worlds. David and his wife Jessie just finished a huge project – developing the Fremen language for Dune: Part Two. I talk with the couple about their creative process and the challenge of imagining simple English phrases in the Chakobsa language that Frank Herbert imagined in his Dune novels. We also hear my 2018 episode, “Do You Speak Conlang?” where I also talked with Marc Okrand, inventor of the Klingon language, and Robyn Stewart, a language consultant for Star Trek: Discovery. Plus, Jen Usellis -- a.k.a. Klingon Pop Warrior -- will give you a serious case of earworms (not the kind from Wrath of Khan.)

For more episodes about Dune, check out my 2017 episode The Book of Dune, where I talked with Muslim fans of the series about the way Frank Herbert incorporated aspects of Islam into the books. And in 2021, I did an episode called The Ecology of Dune where I looked at the environmental messages in the books and whether Frank Herbert’s environmental sensibilities still hold up today.

This episode is sponsored by Surfshark and Magic Spoon.

Get Surfshark VPN at and enter the promo code IMAGINARY for three extra months for free.

Get a custom bundle of Magic Spoon cereal at Enter the promo code IMAGINARY at checkout to save five dollars off.

Learn more about your ad choices. Visit