SAG-AFTRA, the organization that represents voice, motion, and screen performers, has filed an unfair labor complaint against Epic Games. The complaint stems from the company’s recent introduction of an AI programmed to sound like James Earl Jones’ Darth Vader that can respond to a player’s actions and questions.

Hollywood’s actors’ union filed an unfair labor practice charge against Llama Productions on Monday, alleging the company replaced actors’ work by using artificial intelligence to generate Darth Vader’s voice in Fortnite without notice.

SAG-AFTRA is objecting to the use of AI to regenerate the late James Earl Jones’ bass intonations of Darth Vader in Epic Games’ “Fortnite.” SAG-AFTRA said the studio behind “Fortnite,” Epic-owned Llama Productions,