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Fortnite Creators to Script AI-Powered NPCs with New Persona Device

The update leverages AI dialogue technology first shown in AI Darth Vader to let creators script unscripted NPCs alongside Squid Game, Star Wars and LEGO tools under SAG-AFTRA’s watch.

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Overview

  • Epic Games announced the Persona Device in Unreal Editor for Fortnite will let creators define AI NPC personalities, voices and goals when it launches later in 2025.
  • The technology builds on the large-language model system behind Fortnite’s AI Darth Vader NPC, which received a hotfix after players induced profanity and prompted a SAG-AFTRA complaint.
  • Epic is expanding licensed content in UEFN with Squid Game assets arriving June 27, a LEGO Brick Editor on June 17 and plans for Star Wars and Avatar: The Last Airbender integrations.
  • The Epic Developer Assistant, now in beta, offers AI-driven coding support for creators writing in the Verse language on the Epic Developer Community site.
  • CEO Tim Sweeney says AI dialogue tools will enable smaller teams to build richer, more immersive games by automating character scripting and infinite dialogue possibilities.