SAG-AFTRA wrote in a statement that it understands its members and members’ estates wish to use AI technology in any way they choose. “However,” SAG-AFTRA’s statement continued, “we must protect our right to bargain terms and conditions around uses of voice that replace the work of our members, including those who previously did the work of matching Darth Vader’s iconic rhythm and tone in video games.”

While the AI “revolution” slowly replaces human workers with oftentimes inferior products, and despite some members’ distaste for the practice, SAG-AFTRA has embraced the idea of using AI trained to replicate an actor’s performance. It has established contracts and partnerships with several AI companies with the idea being members can use this technology with specific contract-guaranteed protections. So the act of using an AI to replace Darth Vader’s voice performers (both the late James Earl Jones and those brought in after his death to match his performance) isn’t what SAG-AFTRA is objecting to. Rather, it’s the fact that this was done without Epic Games sitting down with SAG-AFTRA at the bargaining table to hash out the specifics.

“Fortnite’s signatory company, Llama Productions, chose to replace the work of human performers with AI technology,” SAG-AFTRA wrote. “Unfortunately, they did so without providing any notice of their intent to do this and without bargaining with us over appropriate terms.” The Verge has reached out to Epic Games for comment.

AI and its use in video game voice and motion performance is the main stumbling block in the ongoing video game voice actor strike. Negotiations between SAG-AFTRA and the signatory companies of its interactive media agreement broke down last year, and performers have been on strike since July — a length of time that eclipses both the actors and writers strikes of 2023.