Fortnite is letting creators build their own AI characters

Talking to video game characters used to mean clicking through three canned dialogue options and hearing the same repetitive voice line. Epic Games flipped that script with an AI-powered Darth Vader in Fortnite, letting players literally speak into their mics and hear an uncanny, AI-generated version of James Earl Jones bark back at them.

Now, Epic is preparing to hand those very same AI character tools over to everyday Fortnite creators. But according to Saxs Persson, Epic's EVP of the Fortnite ecosystem, anyone hoping for a simple drag-and-drop experience should brace for a serious learning curve.

Teaching Vader not to cuss

Dropping a raw large language model into an aggressive, menacing Sith Lord turned out to be far more complicated than Epic anticipated. Persson told The Verge that dialing in Vader's reactions, aggressive combat personality, and iconic voice took intense effort so that the character seamlessly fit the gameplay.

Things still went off the rails almost immediately. Popular streamer Loserfruit quickly figured out how to bait the Dark Lord into dropping curse words, forcing Epic to scramble and patch the behavior. Persson called the incident an essential learning experience, noting that Epic has since built multi-layered safety guardrails that third-party creators will also have access to.

The button-pushing demo

To show what creators could actually build, Epic took the stage at Unreal Fest on June 3rd to unveil an AI NPC named Mr. Buttons. His sole reason for existing: using his voice and conversational wit to convince the player to push a giant red button.

Because the dialogue runs on AI, Mr. Buttons can react to virtually anything a player throws at him, creating endless banter and a totally unique interaction for everyone. Persson wouldn't commit to a timeline for Epic's next first-party AI characters, though he noted AI will likely play a major role in the persistent universe Epic is currently building with Disney. As CEO Tim Sweeney put it, AI isn't an end goal; fun is the goal, and AI is simply another tool in the box.

Why it matters

We think Epic is approaching generative AI in gaming the right way: by treating it as a dynamic mechanic rather than a lazy cost-cutting shortcut for voice actors. Handing these tools to creators could completely reinvent user-generated maps, letting solo developers build narrative-rich roleplay worlds that previously required massive budgets and hundreds of written scripts.

However, the real friction will be moderation. As the Darth Vader swearing slip-up proved, players will relentlessly push boundaries the second you hand them a live microphone. If Epic cannot make its guardrails bulletproof and creator-friendly, island builders might find themselves spending more time acting as AI babysitters than actually designing games.